Abstract: Computer program products, methods, systems, apparatus, and computing entities are provided for forecasting travel delays corresponding to streets, street segments, geographic areas, geofenced areas, and/or user-specified criteria. And from the forecasted travel delays, speed and travel times that take into account such travel delays can be determined.

Abstract: A system and method for providing a suggested modification to road characteristics is provided. Signals indicating locations of several users are received at different points in time. A flow of traffic corresponding to the several users is determined based on an analysis of the locations of the several users at the different points in time. A high traffic area is identified in the determined flow of traffic by comparing the determined flow of traffic with a predetermined baseline flow of traffic. Road characteristics in the identified high traffic area are analyzed and a suggested modification to at least one of the road characteristics based on the analyzing of the road characteristics is provided.

Abstract: Methods, systems, and devices for monitoring roadway traffic. A method includes transmitting wireless signals from at least one roadside equipment (RSE) device and receiving responses by the RSE device from a wireless device, the responses including a unique identifier corresponding to the wireless device. The method includes determining a signal strength of each of the responses by the RSE device and transmitting response data from the RSE device to a control system, the response data including the unique identifier, the signal strength of each of the responses, and times that the responses were received. The method includes detecting at least one vehicle by the control system using a vehicle detection device and associating the response data with the detected vehicle. The method includes determining traffic information associated with the wireless device based on the received response data and the associated detected vehicle.

Abstract: A system includes a vehicle processor configured to detect one or more brake presses. The processor is also configured to detect one or more accelerator presses. Further, the processor is configured to add values related to the brake presses and accelerator presses to aggregate an index value based on detected brake and acceleration presses. The processor is additionally configured to enact a safety and convenience related measure based on the index value passing at least a first predetermined threshold.

Abstract: Systems, methods, software, and apparatuses for coordinating traffic proximate to a potential conflict zone, such as a roadway intersection, where travel conflicts, such as crossing traffic, can arise. Coordination involves forming an ad-hoc network in a region containing the conflict zone using, for example, vehicle-to-vehicle communications and developing a dynamic traffic control plan based on information about vehicles approaching the conflict zone. Instructions based on the dynamic traffic control plan are communicated to devices aboard vehicles in the ad-hoc network, which display one or more virtual traffic signals to the operators of the vehicles and/or control the vehicles in accordance with the dynamic traffic control plan.

Abstract: A traffic control system sets a target value related to a travel state based on a correlation between a vehicle travel speed and a traffic volume, and controls multiple vehicles (CS) on a road in accordance with the target value as a common target value. The target value can be set based on a predicted traffic volume at a region (103) that is ahead of, in a vehicle travel direction, the multiple vehicles on the road. For example, the traffic control system sets, as the target value, a target speed or a target value of a parameter related to an inter-vehicle distance.

Abstract: A device, system and method for controlling speed of a vehicle are provided. The device includes a locational information module for determining location information and speed; a storage module for storing at least one geographic map including at least one route and a speed limit for the at least one route; a processing module configured to receive the location information, retrieve at least one geographic map based on the location information, determine a speed limit based on the location information and compare the speed of the device to the determined speed limit; and a display module for alerting a user if the speed of the device exceeds the determined speed limit. The system and method can be for communicating a subject vehicle's speed to a central server where it can be utilized to analyze traffic congestion patterns or notify selected companies or individuals.

Abstract: A novel privacy control-adjustable vehicle monitoring system and a related method of operation provide a dynamically-adjustable access grant or denial of privacy-sensitive vehicle information to a vehicle monitoring personnel based on a driver's response to an electronic request made by the vehicle monitoring personnel. In one embodiment, vehicle information is categorized into a mandatory disclosure dataset and a privacy-adjustable dataset, wherein the mandatory disclosure dataset is disclosed to the vehicle monitoring personnel at all times, while the privacy-adjustable dataset is accessible if the driver grants access via a driver's user interface on an onboard vehicle user interface, or on a mobile electronic device. Furthermore, a special wild card mode visible to the driver enables the vehicle monitoring personnel to access an entire set of vehicle information for a limited period per access and for a limited number of accesses per period, based on a pre-arranged consent with the driver.

Abstract: A system for identifying a fastest possible travel route is disclosed. A traveler data processor collects traffic speed data and associates the traffic speed data with road segments. The road segments collectively represent one or more possible travel routes from a start point to an end point. A forecast engine determines a predicted travel time for each of the road segments based on, for example, the traffic speed data for each of the road segments. A routing engine determines the fastest possible travel route from the start point to the end point. The fastest possible travel route is the possible travel route from the one or more possible travel routes with the shortest predicted travel time.

Abstract: System and method for identifying speeding violations, comprising determining a current speed and a current location of a vehicle, determining a posted speed limit for the current location from a speed-by-street database, comparing the current speed of the vehicle to the posted speed limit, and evaluating whether the current speed exceeds the posted speed limit. Errors are identified in the speed-by-street database by storing a plurality of speeding violation records, wherein the speeding violation records each include a speeding event location; analyzing the speeding violation records to identify one or more speeding event locations having multiple speeding violations; comparing a posted speed limit at the one or more speeding event locations having multiple speeding violations to corresponding speed limit data in the speed-by-street database; and identifying one or more speed limit entries in the speed-by-street database that do not match the posted speed limit.

Abstract: A platoon model allows improved prediction of preceding vehicle future state. In this context, the preceding vehicle is a vehicle immediately ahead of the host vehicle, and the dynamic state of the preceding vehicle was predicted based on data received from one or more vehicles in the platoon. The intelligent driver model (IDM) was extended to model car-following dynamics within a platoon. A parameter estimation approach may be used to estimate the model parameters, for example to adapt to different driver types. An integrated approach including both state prediction and parameter estimation was highly effective.

Abstract: A computer-implemented method for assessing traffic status with sensors is provided. The method includes receiving sensor readings from a plurality of mobile sensors for detecting a traffic parameter and obtaining traffic information associated with the received sensor readings. The method also includes identifying a change in traffic based on the obtained traffic information and the received sensor reading, and determining whether a traffic incident has occurred based on the identified change. Systems and machine-readable media are also provided.

Abstract: In an intelligent forward collision warning system that takes into account not only a first preceding vehicle traveling immediately ahead of the ego vehicle but also a second preceding vehicle traveling immediately ahead of the first preceding vehicle, a warning signal is produced upon detecting a critical state of the first or second preceding vehicle or an external condition that is predicted to cause the first preceding vehicle and the ego vehicle to be in a same lane with the first time to collision (TTC) below a prescribed value.

Abstract: A method for regulating a distance of a vehicle from a preceding vehicle (vehicle ahead) based on available information for the subject vehicle's speed, for the distance and for the speed of the vehicle ahead and on data regarding route information includes determining a fuel-saving situation for a fuel saving momentum utilization phase, and precomputing a consumption optimal speed profile for undisturbed travel. The method further precomputes additional separation requirement to the vehicle ahead that is required to be able to fully implement the momentum utilization phase, and builds up the required additional separation prior to the fuel-saving situation, wherein the additional separation is built up, preferably substantially uniformly, over a separation build-up distance that is longer than the precomputed momentum utilization phase distance and/or is built up with a driver-acceptable, convoy-stabilizing, defined small speed reduction relative to the current speed of the vehicle.

Abstract: A system and method which detects and uses a point of contact between a vehicle's tire and the pavement as a reference point to improve the accuracy of vehicle speed detection in a motorized vehicle speed detection system. In one embodiment, a plurality of infrared images of a moving vehicle are received. Each of the images is separated in time by known intervals. The images are captured using an infrared camera which can be a single-band or multi-band camera which operates in an infrared wavelength band selected to enhance a contrast between the vehicle's tires and the road surface. For each image, a point of contact is determined where a same tire contacts the road surface. These points and the time interval separations are used to calculate the vehicle's speed. An alert signal is initiated to a traffic enforcement authority if the speed exceeds the road's speed limit.

Abstract: To ascertain traffic status data, a speed of a vehicle is acquired multiple times at predefined time intervals. The respective acquired speed is assigned to a first speed range when the respective acquired speed of the vehicle is greater than at least one predefined speed threshold. Furthermore, a first count is increased when the respective acquired speed is assigned to the first speed range. The respective acquired speed is assigned to a second speed range when the respective acquired speed of the vehicle is less than the at least one speed threshold, and a second count is increased when the respective acquired speed is assigned to the second speed range, wherein a holding phase is recognized while the respective acquired speed has a speed value in a predefined range around the value zero once or multiple times in succession.

Abstract: Systems and associated methods for utilizing crowdsourcing probes to obtain traffic information are described. Such traffic information includes location, date, time, speed, and speed limit information. Embodiments allow for the determination of traffic intensity, or road congestion, through the calculation of a road speed capacity factor. Embodiments provide that the traffic information and traffic intensity information may be visualized through a user interface.

Abstract: A method and system for generating a dynamic speed limit is provided. The method includes dynamically receiving, from vehicles currently in motion on a roadway, a dynamically changing data stream comprising data comprising parameters associated with the vehicles. Speed limits, recommended lane assignments, and velocity ranges for the vehicles are dynamically defined. The speed limits, the recommended lane assignments, and the velocity ranges are transmitted to and presented by each associated vehicle.

Abstract: Each respective vehicle of a plurality of vehicles transports a vehicle navigation system. A position determining system determines a position and a velocity of the respective vehicle and an information acquisition system is operable to determine a displacement and velocity between the respective vehicle and a vehicle adjacent to the respective vehicle. An information communication system of a respective vehicle is operable to transmit first information (that vehicle's velocity and position) to other vehicles and to receive information from other vehicles regarding their velocities and positions. A vehicle routing system can determine a target routing and target velocity for moving the respective vehicle over a path including the roadway. Based on the received or determined information, the velocity of the respective vehicle can be controlled.

Abstract: Quality assessment of probe data collected from GPS systems is performed by a system and method of determining a value of data points provided by different vendors of such data. Incoming raw probe data is initially analyzed for removal of extraneous data points, and is then mapped to roadway links and smoothed out. The resulting output is processed to determine the coverage value of data provided by a given vendor and enable a comparison between different vendors. Such a model of probe data processing also enables an evaluation of a contribution of further vendors of raw probe data to an existing dataset. Additionally, a real-time performance evaluation of continually-ingested probe data includes building historical and data count profiles, and generating output data represented by a number of data points for a specific distance within a geo-box representing a geographical area, to project a value of raw probe data for a next incremental time period.

Abstract: Estimation of traffic speed includes applying data processing functions to determine missing speed information by smoothing spatial and temporal GPS data to achieve an accurate estimation of link speed over all links of a transportation network at all time periods. This estimation of traffic speed uses one link's observed speed information to estimate neighboring links without observed speed information and therefore provides a system and method of processing collected GPS data to obtain a thorough understanding of traffic flow conditions for all represented links without further collection of GPS data. The present invention also provides a framework for analyzing and improving real-time collection of GPS speed data.

Abstract: A method and system for modeling and processing vehicular traffic data and information, comprising: (a) transforming a spatial representation of a road network into a network of spatially interdependent and interrelated oriented road sections, for forming an oriented road section network; (b) acquiring a variety of the vehicular traffic data and information associated with the oriented road section network, from a variety of sources; (c) prioritizing, filtering, and controlling, the vehicular traffic data and information acquired from each of the variety of sources; (d) calculating a mean normalized travel time (NTT) value for each oriented road section of said oriented road section network using the prioritized, filtered, and controlled, vehicular traffic data and information associated with each source, for forming a partial current vehicular traffic situation picture associated with each source; (e) fusing the partial current traffic situation picture associated with each source, for generating a single co

Abstract: Embodiments of the present invention provide a wireless traffic sensor system. The system includes a plurality of wireless traffic sensors collecting traffic information from one or more vehicles that pass by; and at least one wireless communication device that receives the traffic information from at least one of the wireless traffic sensors and relays the traffic information to a wireless communication tower in vicinity. At least one of the wireless traffic sensors is placed inside a container and has a mounting flange that lays over edge of the container and is affixed to the container by one or more spring clips. The spring clips are not physically accessible once the wireless traffic sensor is affixed to the container, and are released only upon receiving a coded wireless electromagnetic signal or by a special tool that matches to a key inside the wireless traffic sensor.

Abstract: Devices, methods, and programs access map information including link information related to links that constitute a road, acquire a current location of a vehicle at unit time intervals, and acquire traffic information, which includes a distributed traffic congestion level of each link at predetermined time intervals. Each time the vehicle exits a link, the devices, methods, and programs sequentially store the exited link in an exited link train based on the map information. If the traffic information has been received, the devices, methods, and program store the distributed traffic congestion level included in the received traffic information as a traffic congestion level in association with a portion of the exited link train within a range from the current location at a received time point when the traffic information has been received to a location that is a predetermined distance behind the current location at the received time point.

Abstract: A system and method for managing vehicles on a road network can include a processor that performs operations including accessing a matrix of vehicle parameters of a plurality of communicating vehicles on the road network and representing the plurality of communicating vehicles in a graph with a plurality of nodes corresponding to the plurality of communicating vehicles and edges corresponding to the vehicle parameters. The system and method can include partitioning, with a processing device, the graph to reduce disruptions to the road network below a threshold level to support safe and efficient traffic flow and assigning one or more exclusion zones within the road network to each partition of the graph by associating the vehicle parameters for each vehicle.

Abstract: A driving control system has a position/speed information detecting section for detecting the position and speed of a host vehicle, a communication unit for acquiring the position and speed information of another vehicle, a proximity position estimating section that estimates a proximity position at which the host vehicle and the other vehicle approach each other and a proximity position changing unit that, when the host vehicle and the other vehicle are travelling on the same lane at the same time, changes the proximity position to a changed proximity position outside of a waiting time generation area. A travelling plan generation section generates a travelling plan while the other one of the host-vehicle and the other vehicle enters the waiting time generation area. A communication unit transmits the travelling plan to the other vehicle, and a travel driving unit executes the driving of the host vehicle according to the travelling plan.

Abstract: Providing traffic flow control services includes receiving requests at an arbiter of a traffic control subsystem. The traffic control subsystem is in a first state, and the requests are received from vehicle transmitters in proximity of the traffic control subsystem. Traffic flow control services also include applying a pre-defined condition to the requests and implementing a traffic flow control activity responsive to application of the pre-defined condition. The traffic flow control activity includes maintaining the first state or changing the first state of the traffic control subsystem to a second state.

Abstract: Techniques are described for assessing road traffic conditions in various ways based on obtained traffic-related data, such as data samples from vehicles and other mobile data sources traveling on the roads and/or from one or more other sources (such as physical sensors near to or embedded in the roads). The road traffic conditions assessment based on obtained data samples may include various filtering and/or conditioning of the data samples, and various inferences and probabilistic determinations of traffic-related characteristics of interest from the data samples. In some situations, the inferences include repeatedly determining current traffic flow characteristics and/or predicted future traffic flow characteristics for road segments of interest during time periods of interest, such as to determine average traffic speed, traffic volume and/or occupancy, and include weighting various data samples in various ways (e.g., based on a latency of the data samples and/or a source of the data samples).

Abstract: DSRC (Dedicated short range communication) is expected to play a significant role in Transportation applications for Public Safety and Traffic Management. Some of the key applications especially safety and mobility application requires an accurate representation of the road segments. Accordingly, here, in one example, we describe a method and infrastructure for DSRC V2X (vehicle to infrastructure plus vehicle) system. This presentation, e.g., adds the following improvements on the existing technologies, as some of the examples: (a) Using Speed-Profiles for identifying Intersections/mandatory-stops/Speed-limits, etc. Also, the extension of the map coverage using speed profile data. (b) Vehicular density identification for determining confidence of generated MAP. (c) Mechanisms for identifying Lane Attributes, like Lane-Width, Lane-Connections, Possible Movement states, average travel-time on the lane, etc.

Abstract: A system includes a communication module and a determination module. The communication module is configured to be located onboard a vehicle configured to travel along a route including plural sub-routes. The communication module is configured to receive route occupancy information from an off-board wayside module disposed along the route. The route occupancy information corresponds to a presence or absence of vehicular traffic on each sub-route within a range of a route detection system operably coupled to the wayside module. The determination module is configured to be located onboard the vehicle, and to obtain position information from one or more onboard detection units disposed onboard the vehicle. The determination module is configured to determine a particular sub-route on which the vehicle is disposed using a comparison of the position information obtained from the one or more onboard detection units and the occupancy information received from the off-board wayside module.

Abstract: Traffic management reports are created from data provided by vehicle sensor devices placed at different fixed locations in a region. Data of vehicles that pass each of the vehicle sensor devices are captured and communicated to a central computer database. At the central computer database, traffic management reports are periodically created from the vehicle data. Each traffic management report incorporates vehicle data from a plurality of vehicles. The vehicle data is for a plurality of previous, non-current times so as to allow for analysis of past vehicle data.

Abstract: At least one embodiment of the invention relates to a navigation device for providing warnings when a detection point of a speed trap is approached, including a processor unit arranged to communicate with memory unit and to receive positional information from a positioning device. The memory unit may include a speed trap database, including at least one detection point of a location of a speed trap. The navigation device of at least one embodiment is arranged to provide a warning when one of the at least one detection point is approached. The memory unit is further arranged to include at least a further detection point associated with at least one of the stored detection points, both relating to a same point to point speed trap. In at least one embodiment, the navigation device is arranged to provide a warning when the further detection point is approached or has been passed.

Abstract: System and method for identifying speeding violations, comprising determining a current speed and a current location of a vehicle, determining a posted speed limit for the current location from a speed-by-street database, comparing the current speed of the vehicle to the posted speed limit, and evaluating whether the current speed exceeds the posted speed limit. Errors are identified in the speed-by-street database by storing a plurality of speeding violation records, wherein the speeding violation records each include a speeding event location; analyzing the speeding violation records to identify one or more speeding event locations having multiple speeding violations; comparing a posted speed limit at the one or more speeding event locations having multiple speeding violations to corresponding speed limit data in the speed-by-street database; and identifying one or more speed limit entries in the speed-by-street database that do not match the posted speed limit.

Abstract: Systems and methods for estimating time of arrival for vehicle navigation are described. One embodiment of a method includes determining a route for a vehicle to reach a destination from a current location determining, by the computing device, an estimated time for reaching the destination from the current location. Embodiments of the method additionally include determining, by the computing device, a current range of the vehicle, based on current fuel level and vehicle fuel efficiency and determining, by the computing device and based on the current range, whether the vehicle can reach the destination without refueling. Some embodiments include revising, by the computing device, the estimated time for reaching the destination to include a waypoint to refuel in response to determining that the vehicle cannot reach the destination without refueling and providing, by the computing device, the estimated time for reaching the destination for display to a user.

Abstract: A method for predicting traffic wherein the method is a trend based extrapolation method that uses real time traffic data and historic traffic data to generate a predictive traffic product. The predictive traffic product provides expected traffic speeds for the short term future, for example, between two to twelve hours into the future.

Abstract: A system for sharing and processing traffic information includes a number of traffic information computer systems within individual vehicles or devices and a virtual traffic information server on a mobile network. The traffic information computer systems are each connected through a peer-to-peer radio, cellular, Wi-Fi, or other similar types of communications network, and which each operate with a database for displaying road maps, with a database storing average speed data for directions of travel along roadways, and with a location sensor used to determine the location and average speed of the vehicle or device, which are transmitted to other vehicles. The virtual server returns average speed data for road segments, which is displayed on the road maps. The system includes sharing average speed data calculated as well average speed data received from the plurality of vehicles to other vehicles, thereby enhancing the real-time communication of traffic and/or road condition data.

Abstract: A computer-implemented method includes obtaining road sensor data reflecting speeds of traffic on road segments, transforming the road sensor data using vehicle probe data for the road segments reflecting vehicle speeds, and producing speed estimates for the road segments using the transformed road sensor data. The method can further include determining speeds for road segments between road sensors by smoothing data from sensors near the road segments.

Abstract: Techniques are described for assessing road traffic conditions in various ways based on obtained traffic-related data, such as data samples from vehicles and other mobile data sources traveling on the roads and/or from one or more other sources (such as physical sensors near to or embedded in the roads). The road traffic conditions assessment based on obtained data samples may include various filtering and/or conditioning of the data samples, and various inferences and probabilistic determinations of traffic-related characteristics of interest from the data samples. In some situations, the inferences include repeatedly determining current traffic flow characteristics and/or predicted future traffic flow characteristics for road segments of interest during time periods of interest, such as to determine average traffic speed, traffic volume and/or occupancy, and include weighting various data samples in various ways (e.g., based on a latency of the data samples and/or a source of the data samples).

Abstract: A vehicle speed advisor system that provides an indication of the local speed limit to the driver in order to warn the driver when the local speed limit has been exceeded. The system detects the actual GPS position and obtains the allowed local speed limit of that position in a USB or flash memory, which is then displayed using a speed limit indicator in the scale of the speedometer of the instrument cluster in one mode of operation when the speed limit has not been reached, or in a second mode of operation when the speed limit has been reached or surpassed. The driver does not have to look at the street to see the allowed driving speed because the instrument cluster always provides an indication of the local speed limit.

Abstract: In embodiments of the present invention improved capabilities are described for identifying a first location, at time one, of a plurality of automobiles using cell phone tower triangulation to locate a cell phone within each of the plurality of automobiles, identifying a second location, at time two, for each of the plurality of automobiles using cell phone tower triangulation to locate the cell phone within each of the plurality of automobiles, calculating a vehicle speed for each of the plurality of automobiles using the first and second locations already identified, and creating a traffic condition measure for a route in proximity to the first and second locations. The computer program product may repeat this process in real-time to calculate a real-time traffic condition measure that may be a traffic density measure the computer program product may use to predict a travel time.

Abstract: A system is provided for estimating time travel distributions on signalized arterials. The system may be implemented as a network service. Traffic data regarding a plurality of travel times on a signalized arterial may be received. A present distribution of the travel times on the signalized arterial may be determined. A prior distribution based on one or more travel time observations may also be determined. The present distribution may be calibrated based on the prior distribution.

Abstract: Data acquisition from a sampling of vehicle sensors includes identifying a vehicle population density for a defined region, calculating a proportional representation ratio from the vehicle population density, and transmitting a request for data over a network. The request includes the response criteria configured with the proportional representation ratio. The data acquisition also includes receiving the data from vehicles that are located in the defined region and that fall within the proportional representation ratio, and which meet the response criteria.

Abstract: Techniques are described for generating and using information regarding road traffic in various ways, including by obtaining and analyzing road traffic information regarding actual behavior of drivers of vehicles on a network of roads. Obtained actual driver behavior information may in some situations be analyzed to identify decision point locations at which drivers face choices corresponding to possible alternative routes through the network of roads (e.g., intersections, highway exits and/or entrances, etc.), as well as to track the actual use by drivers of particular paths between particular decision points in order to determine preferred compound links between those decision point locations. The identified and determined information from the analysis may then be used in various manners, including in some situations to assist in determining particular recommended or preferred routes of vehicles through the network of roads based at least in part on actual driver behavior information.

Abstract: Disclosed herein are an apparatus and method for providing intersection collision-related information. The apparatus for providing intersection collision-related information includes a surrounding information acquisition unit, a collision-related information calculation unit, and a collision-related information provision unit. The surrounding information acquisition unit acquires intersection traffic information including vehicle heading information, vehicle turning frequency information, vehicle trajectory information and vehicle speed information from one or more of a road sensor provided at an intersection and a vehicle sensor provided in a vehicle. The collision-related information calculation unit calculates intersection collision-related information including the degree of vehicle collision risk that is calculated using the intersection traffic information. The collision-related information provision unit provides the calculated intersection collision-related information to a user.

Abstract: A system and method for self-optimizing traffic flow using shared vehicle information that utilizes multiple controllers in dynamic communication to optimize the flow of traffic. The system and method utilizes one or more traffic synchronization controllers (TSCs) (receivers) that receive information from one or more vehicle based transmitters called vehicle information agents (VIAs) and/or a network of traffic control devices (TCDs) associated with the traffic synchronization controllers to determine a variety of information related to traffic within a geographic region, including volume, speed, destination, intended route of the vehicle, as well as other vehicle related information, in order to determine the optimal flow of traffic within the region. The system and method then transmits traffic control signals to the various traffic control devices within the region or adjacent regions in order to optimally control the flow of traffic.

Abstract: Techniques are described for virtual traffic sensors (VTS). In an implementation, an electronic device provides a variety of functionality including at least functionality to determine position. The electronic device may be further configured to ascertain locations of one or more virtual traffic sensors. In at least some embodiments, locations of virtual traffic sensors are determined by the electronic device using a variety of VTS criteria. Using a determined position, the electronic device may detect proximity to the virtual traffic sensors. The electronic device may collect traffic related data when in proximity to the one or more virtual traffic sensors. The electronic device may then communicate the collected traffic data over a suitable network connection to a service provider.

Abstract: Improved capabilities are described for identifying a first location, at time one, of a plurality of automobiles using cell phone tower triangulation to locate a cell phone within each of the plurality of automobiles, identifying a second location, at time two, for each of the plurality of automobiles using cell phone tower triangulation to locate the cell phone within each of the plurality of automobiles, calculating a vehicle speed for each of the plurality of automobiles using the first and second locations already identified, and creating a traffic condition measure for a route in proximity to the first and second locations. The computer program product may repeat this process in real-time to calculate a real-time traffic condition measure that may be a traffic density measure the computer program product may use to predict a travel time.

Abstract: Methods and devices for using position logs of vehicles to determine the presence and behavior of traffic controls are disclosed. An example method includes receiving movement data that is indicative of movement of a plurality of vehicles through an intersection. The movement data may be received by a computing device and may include, for each respective vehicle, data indicative of the respective vehicle's position as a function of time for multiple instances of time. The method may further include detecting a pattern in the movement data using the computing device. The detected pattern may be indicative of a probable traffic control for the intersection. According to the method, an indication of the probable traffic control for the intersection may be stored in a database.

Abstract: A device-vehicle interoperability verification method is disclosed herein. Vehicle information is obtained by a mobile communications device, and this vehicle information pertains to a vehicle within which the device is being used or is going to be used. The vehicle information and device identification information is transmitted from the device to a server. The transmission occurs in response to a command generated by an application resident on the device, which includes computer readable code, embedded on a tangible, non-transitory computer readable medium, for performing the transmission. A data aggregator at the server queries a database to obtain data pertaining to an interoperability between the device and the vehicle, and a communications module at the server sends a message to the device that includes at least the data pertaining to the interoperability between the device and the vehicle.

Abstract: The present invention relates to methods, computer software products, server and system for mapping road conditions, especially friction. In the method according to the invention the acceleration of the vehicle is measured by means of an acceleration sensor, the position of the vehicle is monitored by means of positioning means and the measured acceleration value is combined with the position data of the measurement location. The method compares whether the measured position-specific acceleration value exceeds the value on the server for the said area and in case the value is exceeded, a measured position-specific acceleration value is sent to the server.