Abstract: In one embodiment, a towed implement proximity system, the system comprising: a first device comprising a transceiver, the first device configured to: transmit a signal; receive a first signal at a first angle and a second signal at a second angle responsive to the transmitted signal, the first and second signals comprising first information and second information, respectively, the first and second information each corresponding to respective positional information; and a controller coupled to the first device, the controller configured to determine a relative position in three axes between a first machine and a second machine based on the first and second information.

Abstract: Disclosed is an antilock braking system for trailers equipped with electric brakes. A control module captures wheel speed data, analyzes it, and determines if wheel slip is occurring. Braking signal to the trailer wheels is reduced using pulse width modulation techniques to reduce the braking force as necessary to eliminate wheel slip. A particular system uses a central microprocessor, two hall-effect speed sensors, and three solid state relays for isolation and control. The ABS works in conjunction with an existing trailer brake controller installed in the tow vehicle.

Abstract: Apparatus for measuring the articulation angle between a tractor and trailer connected by a kingpin and fifth wheel include a transfer assembly associated with the kingpin and interacting with the fifth wheel such that the transfer assembly is rotationally moved relative to the kingpin by relative rotational movement between the kingpin and the fifth wheel. This rotational movement is read by an articulation sensing mechanism having one of a reader element and output element mounted to the transfer assembly and the other of the reader element and the output element operatively mounted to the trailer such that the reader element and the output element interact to provide a signal corresponding to the articulation angle between the tractor and trailer. This signal can be analyzed by a processor for any beneficial use, for example, outputting to a counter steering mechanism.

Abstract: A hitch mounted lift platform includes platform and lift base back-up sensors for detecting and alerting a vehicle occupant of a rear obstruction being approached to prevent collision and damage to the lift platform, items carried on the lift and the rear obstruction. The lift platform includes quick disconnect devices for connecting and disconnecting the associated wiring for easy attachment and detachment of the lift platform from the vehicle. The back-up sensors communicate with a visual display and/or speakers for visually and audibly alerting the vehicle occupant of any approaching rear obstructions. In operation, the visual display is activated when the vehicle is put in reverse. An audible alerting noise, such as beeping, is initiated by the back-up sensors detecting the vehicle is coming within a predetermined distance of an obstruction.

Abstract: A trailer is provided with various parametric sensors. Trailer operating characteristics obtained from the sensors are conveyed to an attached tow vehicle. The tow vehicle is configured to respond to trailer operating conditions or characteristics and/or warn the tow vehicle operator of trailer conditions. The tow vehicle's operation can also be changed responsive to an attached trailer.

Abstract: A hitch angle monitoring system and method are provided. A display shows an imaged scene of a hitch connection between a tow vehicle and a trailer. A processor is configured to superimpose an overlay on the imaged scene, wherein the overlay indicates a hitch angle position limit. A hitch angle position indicator is shown on the display and visually relates a current hitch angle position to the hitch angle position limit.

Abstract: This disclosure describes systems, methods, and apparatuses for providing visual and audio warnings to a vehicle driver warning of cargo on the vehicle roof when the vehicle approaches a structure. A low-power wireless transmitter can be coupled to each cargo item and is small enough to be left on the cargo when the cargo is used such that the wireless transmitter need not be removed from and reattached to the cargo. The wireless transmitter emits a wireless signal that a visual warning device coupled to the structure detects along with detection of a wireless signal from an audio warning device mounted within the vehicle. When both signals are detected, the visual warning device can provide a visual warning to the driver and also instruct the audio warning device inside the vehicle to audibly warn the driver.

Abstract: A motor vehicle combination is provided. The motor vehicle combination includes a towing vehicle. The towing vehicle is embodied as passenger car. In addition, the motor vehicle combination includes at least one trailer. The at least one trailer can be mechanically connected to the towing vehicle. In addition, the motor vehicle combination comprises a bidirectional communication unit, which is designed for exchanging data between the towing vehicle and the at least one trailer.

Abstract: Techniques for operating, testing, and generating a testing report for the electrical and air subsystems of a vehicular trailer, without the use of an associated truck tractor are disclosed. The system includes a portable testing unit with self-powered electrical and air subsystems which are interconnected to the corresponding subsystems of the vehicular trailer under test. The portable testing unit can be rolled about on a stand and functions as a mini-truck tractor, in the sense that it selectively provides electrical power and air to the VUT. The testing unit is controlled by a small, portable hand held radio frequency remote control that communicates test and data signals to a radio receiver in the portable testing unit. The system acquires testing data from both automatic and manual means from disparate sources. The system stores the testing data and automatically generates testing reports. The system manages the testing data and generated reports.

Abstract: A lighting device has a first panel, which has an underside and an upper side, and a plurality of lighting elements which illuminate the first panel from the underside. The first panel has a plurality of transparent and non-transparent elements which are arranged one adjacent to the other in an alternating fashion and which each extend completely from the underside to the upper side. The lighting elements are controlled by a control device which is designed to bring about a predefinable spatial brightness profile in a space on the upper side of the first panel.

Abstract: A method of controlling a vehicle and a trailer. The vehicle has a front and a rear end, and the trailer is coupled to the rear end. The method includes sensing a plurality of vehicle characteristics, sensing a distance between the vehicle and the trailer with at least one sensor positioned on the rear end of the vehicle, determining an oscillatory action of the trailer based on the sensed distance, and applying a braking force on at least one wheel of the vehicle in response to the oscillatory action.

Abstract: An apparatus for validating a connection between a vehicle and a trailer is provided. The apparatus comprising a controller configured to detect an object positioned rearward of the vehicle and to receive first information indicative of a first distance between the object and the vehicle. The controller further configured to monitor transmission status of the vehicle in response to the first information and to determine whether the first distance between the object and the vehicle is decreasing in response to transmission status indicating that the vehicle is in reverse. The controller being further configured to determine that the object is a trailer in the event the first distance between the object and the vehicle has not decreased while the vehicle is in reverse.

Abstract: A vehicle comprises a trailer angle detection apparatus and a trailer backup control system coupled to the trailer angle detection apparatus. The trailer angle detection apparatus is configured for outputting a signal generated as a function of an angle between the vehicle and a trailer towably attached to the vehicle. The trailer backup control system includes a jackknife enabling condition detector and a jackknife counter-measures controller. The jackknife counter-measures controller alters a setting of at least one vehicle operating parameter for alleviating an adverse jackknife condition during backing of the trailer by the vehicle when the jackknife enabling condition detector determines that a jackknife enabling condition has been attained at a particular point in time during backing of the trailer by the vehicle.

Abstract: The high lock warning system for fifth wheel hitches provides audible and/or visual warning to the operator of a towing vehicle in the event that the king pin of the trailer passes beyond the forward edge of the fifth wheel hitch plate of the towing vehicle during hitching operations. The system includes a panel pivotally attached to the forward portion of the fifth wheel. One or more warning devices are activated if the panel is deflected by the king pin during hitching operations, i.e., a high lock condition. The system may also include an indicator to show proper engagement of the king pin in the fifth wheel hitch. The high lock warning actuator panel may be secured in its normal position by a shear pin that breaks in the event of a high lock, and/or a spring to return the panel to its normal position after a high lock.

Abstract: A vehicle comprises a communication interface for enabling information to be communicated to a and from an occupant of the vehicle and a trailer back-up assist system coupled to the communication interface. The trailer back-up assist system is operable for determining a selected width of a lane within which the vehicle and an attached trailer are to be backed from a current position of the vehicle to reach a targeted location for the attached trailer and for outputting to the occupant of the vehicle via the communication interface information characterizing an ability of the vehicle to be backed within the lane from the current position of the vehicle.

Abstract: A planter monitor system and method that provides an operator with near real-time data concerning yield robbing events and the economic cost associated with such yield robbing events so as to motivate the operator to take prompt corrective action.

Abstract: When a cargo trailer is coupled to a truck, a trailer tracking device on the trailer acquires an identifier of a truck tracking device attached to the truck. The trailer tracking device then transmits a message to a central server indicating that the trailer is coupled to the truck, which message includes the identifiers of the two tracking devices. The central server associates the identifiers of the two tracking devices in a database. When the trailer is decoupled from the truck, the trailer tracking device transmits a message to the central server indicating that the trailer is decoupled. The trailer tracking device then goes into a sleep mode until the trailer is again coupled to a truck, a predetermined time interval expires, a motion sensor indicates trailer movement, location coordinates indicate a geofence violation, or a low battery voltage condition occurs.

Abstract: A turning guide assistant system relates to automotive vehicles, and more particularly to advanced driver assistance systems and active safety systems for automotive vehicles. The turning guide assistant system provides a plurality of projected beams located along the vehicle. When a turning maneuver for the vehicle is performed the beams will clearly display the path of the vehicle on the road. The path will be easily visible to those proximate to the vehicle helping them to stay outside or move outside the path of the vehicle. The turning guide assistant system may include audio and visual alarms external to the vehicle for those in the proximity to reduce the number of accidents. Additionally, the system will alert and warn the driver of any objects detected in the vehicle path.

Abstract: A vehicle comprises a trailer angle detection apparatus and a trailer backup control system. The trailer angle detection apparatus is configured for outputting hitch angle information generated as a function of an angle between the vehicle and a trailer towably attached thereto. The trailer backup control system includes a jackknife enabling condition detector and a jackknife counter-measures controller coupled to the trailer angle detection apparatus. The jackknife enabling condition detector is coupled to the trailer angle detection apparatus for receiving the hitch angle information therefrom and for determining if a jackknife enabling condition has been attained at a particular point in time during backing of the trailer by the vehicle. The jackknife counter-measures controller implements a vehicle speed reducing action in response to the jackknife enabling condition detector determining that the jackknife enabling condition has been attained at the particular point in time during backing of the trailer.

Abstract: A wireless reverse light system for trailers is provided. A transmitter is configured to replace a light bulb or an entire light assembly of at least one reverse light already contained in the vehicle configured to pull the trailer. When the vehicle or tractor is put into reverse gear, the transmitter in place of the reverse light bulb or reverse light assembly sends a wireless trigger or activation signal to a receiver light that is has been attached to a rear and/or side of the trailer. When the wireless signal is received by the receiver, it triggers the connection of a battery supply to light and/or audible indicators contained therein, thereby providing a reverse light or lights at the rear/sides of the trailer where none exist.

Abstract: Methods for linking two or more vehicles to achieve reduced aerodynamic drag while the vehicles are travelling on the road are disclosed. The disclosed methods utilize a dynamic linking system that not only physically connects the vehicles but also allows the driver of the leading vehicle to monitor and control essential functions of the trailing vehicles. Preferably, the driving mechanisms of the trailing vehicles, such as throttles, brakes, and gears, are fully operational so as not to put excessive burden on the driving mechanisms of the leading vehicle. Methods for linking individual vehicles as well as streamlining the operation of a fleet of vehicles are also disclosed.

Abstract: A tow vehicle operating system is provided for wirelessly connecting a first lighting system of a towing vehicle to a second lighting system of a towed vehicle. A wireless transmitter on the towing vehicle broadcasts a linking signal having an identification code and an associated data indicating a present status of lights of the towing vehicle based on an illumination signal from the towing vehicle, over a selected one of a plurality of distinct channels or frequencies. A wireless receiver on the towed vehicle receives the linking signal and verifies the identification code, and transmits an acknowledgement signal to the transmitter, thereby locking in the selected channel or frequency for a wireless communication between the first and second lighting systems. Lights of the towed vehicle are operated in response to the associated data of the linking signal.

Abstract: An overload indicator is shown and described. The overload indicator may include a compression ring located between a portion of a hitch and a hitch ball, the compression ring calibrated to withstand up to a selected vertical force limit. The compression ring collapsing or flattening when applied with a force equal to or greater than the selected vertical force limit.

Abstract: To test whether a trailer is coupled to a tractor when the tractor ignition switch is off, a test switch in the trailer connects a high-impedance power source in a trailer to a line carrying energy from the tractor ignition switch to the trailer's electrical load, and measures the voltage at the line. A high voltage indicates a connection only to the electrical load in the trailer and thus a decouple. A low voltage indicates a measurement of the electrical loads in both trailer and tractor and hence a coupling.

Abstract: The invention relates to a control device and method for signaling a braking process at a trailer vehicle. The control device determines at least one braking value that is assigned to the braking process, and actuates at least one brake light as a function of the braking value. The braking process is signaled differently for different braking values determined by the control device during a braking process. As a result, traffic following the trailer vehicle and/or an emergency braking situation can be signaled and, therefore, safety in road traffic can be increased.

Abstract: A system, an apparatus, and methods are provided for data communications associated with a vehicle. The apparatus preferably includes at least one electronic subsystem associated with the vehicle and a plurality of electrical conductors connected to the at least one electronic subsystem and associated with the vehicle. A vehicle data communications protocol converter is preferably connected to the plurality of electrical conductors for converting a first data communications protocol associated with data communications along the plurality of electrical conductors to a second data communications protocol such as an infrared, an RF data, an Internet, or other network communications protocol.

Abstract: A lane departure warning system has a trailer detector for detecting that a trailer is attached to a vehicle, a lane boundary detector for detecting a position of a lane boundary on a roadway over which the vehicle is travelling, and an information processor including a calibrator for generating calibration parameters used in determining an unintended lane departure event with respect to the lane boundary. The information processor initiates a process for allowing a vehicle operator to provide trailer width information when the trailer detector indicates that the vehicle has the trailer attached thereto. The trailer width information is used by the information processor for generating the calibration parameters as a function of a width of the trailer.

Abstract: A method is provided for operating a motor vehicle. At least one transport device is rigidly connected to the motor vehicle in an outer region, an object is fastened to the transport device and the motor vehicle includes, but is not limited to a sensor. The one transport device in a state in which it is connected to the motor vehicle is partially arranged within a recording range of the sensor. The method includes, but is not limited to determining whether one object is fastened to the transport device takes place based on data determined by the at least one sensor. In the event that it is determined that the object is fastened to the transport device, determining of at least one parameter takes place. The parameter characterizes a possible disconnecting of the one object from the transport device, based on data determined by the sensor.

Abstract: A visual indicator assembly and adaptor for a trailer includes an control circuit, an input lamp plug electrically coupled to the control circuit, an output lamp plug electrically coupled to the control circuit, and an identification lamp plug electrically coupled to the control circuit. The input lamp plug is connectable to a trailer lamp plug of a lamp wiring harness of the trailer. The output lamp plug is connectable to a stop lamp of the trailer. The identification lamp plug is connectable to a corresponding identification lamp plug of the lamp wiring harness. The control circuit is configured to supply a first voltage signal to a plurality of lamps of the trailer in response to a power signal and supply a second voltage signal to the plurality of lamps in response to a brake signal. The second voltage signal is greater than the first voltage signal.

Abstract: An alarm system for an articulated vehicle includes a first part adapted to attach to a vehicular hitch member, and a second part adapted to attach to a trailering hitch member. The first part includes a conductive post extending vertically between first and second electrical contacts. The post and the first and second electrical contacts form parts of an alarm circuit. The second part includes first and a second arms horizontally extending towards the post in a common plane at an angle with respect to each other. When attached, the first and second parts are disposed so that the first arm moves the post into contact with the first electrical contact as the articulated vehicle turns in a first direction, and so that the second arm moves the post into contact with the second electrical contact as the articulated vehicle turns in a second direction opposite the first direction.

Abstract: A hitch mounted lift platform includes platform and lift base back-up sensors for detecting and alerting a vehicle occupant of a rear obstruction being approached to prevent collision and damage to the lift platform, items carried on the lift and the rear obstruction. The lift platform includes quick disconnect devices for connecting and disconnecting the associated wiring for easy attachment and detachment of the lift platform from the vehicle. The back-up sensors communicate with a visual display and/or speakers for visually and audibly alerting the vehicle occupant of any approaching rear obstructions. In operation, the visual display is activated when the vehicle is put in reverse. An audible alerting noise, such as beeping, is initiated by the back-up sensors detecting the vehicle is coming within a predetermined distance of an obstruction.

Abstract: A brake testing device include a remote operated control module which is installed on a towing vehicle to remotely actuate the brake and turn signal lights for testing purposes. When installed on a truck with air brakes and a connection to air brakes on a connected trailer, auxiliary valves are installed on the truck brake pneumatic control line and the trailer brake pneumatic control line which are controlled remotely through the control module to test activation of the air brakes on the truck and trailer respectively.

Abstract: An automotive communication method includes installing a sensor within a vehicle such that the sensor is submerged in a liquid during operation of the vehicle and/or substantially surrounded by a metallic structure during operation of the vehicle. A long wave magnetic signal is transmitted from the sensor. The signal is indicative of a condition sensed by the sensor. The signal is wirelessly received at a controller disposed within the vehicle. Receipt of the signal at the controller is responded to by adjusting a display and/or a setting within the vehicle.

Abstract: A remote data acquisition, transmission and analysis system including handheld wireless equipment to obtain operational data and the status of remote machines is disclosed. A plurality of application controllers are interfaced with the remote machines from which operation data is acquired by the application controllers. The application controllers communicate with an application host via a local area network. The application host may communicate with a network operations center using a wide area network. The handheld wireless equipment may be used to obtain operational information for each remote machine from the network operations center.

Abstract: The high lock warning system for fifth wheel hitches provides audible and/or visual warning to the operator of a towing vehicle in the event that the king pin of the trailer passes beyond the forward edge of the fifth wheel hitch plate of the towing vehicle during hitching operations. The system includes a panel pivotally attached to the forward portion of the fifth wheel. One or more warning devices are activated if the panel is deflected by the king pin during hitching operations, i.e., a high lock condition. The system may also include an indicator to show proper engagement of the king pin in the fifth wheel hitch. The high lock warning actuator panel may be secured in its normal position by a shear pin that breaks in the event of a high lock, and/or a spring to return the panel to its normal position after a high lock.

Abstract: Methods and systems for remotely monitoring trailer or trailers attached to a vehicle is provided. The method includes associating an identification tag or ABS ECU that is configured to broadcast a trailer identification signal with a trailer. The method further includes receiving the trailer identification signal on-board the vehicle, associating the trailer identification signal with the vehicle, transmitting the trailer identification signal to a remote processor and receiving the trailer identification signal at the remote processor. The system comprises a mobile data terminal capable of generating and responding to telematic events comprising at least one processor, a graphical user interface, an input device, a memory and a set of executable instructions which may include a plurality of modules, such as a vehicle location module capable of receiving a GPS signal and transmitting the GPS signal to a remote processor for determining a location of a transportation unit.

Abstract: A speedometer gauge mounted on the rear of a vehicle or trailer that continuously and accurately displays a vehicle's speed in real time by utilizing a pattern of lights that illuminate sequentially in such a fashion as to exhibit to the traffic following, the speed of the vehicle, rate of deceleration or acceleration, and to indicate that the vehicle is stopped, in a panic stop, parked, standing, “riding the brake” or “riding the turn indicator” mode. A video game comprising the use of a speedlight.

Abstract: A method used in a receiver includes measuring first Received Signal Strength Indications (RSSIs) in respective first communication channels, which are located in a given frequency band and which each have a first channel bandwidth. Based on the first RSSIs, second RSSIs are computed for respective second communication channels, which are located in the given frequency band and which each have a second channel bandwidth that is larger than the first channel bandwidth. At least one of the first and second communication channels over which to receive signals at the receiver are selected using the first and second RSSIs.

Abstract: Techniques for operating, testing, and generating a testing report for the electrical and air subsystems of a vehicular trailer, without the use of an associated truck tractor are disclosed. The system includes a portable testing unit with self-powered electrical and air subsystems which are interconnected to the corresponding subsystems of the vehicular trailer under test. The portable testing unit can be rolled about on a stand and functions as a mini-truck tractor, in the sense that it selectively provides electrical power and air to the VUT. The testing unit is controlled by a small, portable hand held radio frequency remote control that communicates test and data signals to a radio receiver in the portable testing unit. The system acquires testing data from both automatic and manual means from disparate sources. The system stores the testing data and automatically generates testing reports. The system manages the testing data and generated reports.

Abstract: An easy to use trailer anti-theft device that forms an integral part of said trailer comprising a front exterior wall mounted locking mechanism having a rotatable lock bar extending therefrom with the lock bar having an upper arm pivotally and swivelably connected to a lower swing bar that can be unlocked and moved from a stored position to a downwardly depending blocking position. The lock bar has a partially rotative lower swing arm that under force extends under the trailer substantially in the direction of the trailer king pin.

Abstract: A switching function is performed in response to a predetermined rate-of-change of an output signal, thereby providing rate-of-change switching. Rate-of-change switches (63 and 154) each include a user-controlled transducer (38A, 38B, or 39), a differentiator (40A, 40B, 112, or 156), and a discriminator (42, 114, 134, 160, or 162). The rate-of-change switches (63 and 154) perform at least one switching function when an output from the differentiator (40A, 40B, 112, or 156) or a second differentiator (158) exceeds an allowable magnitude. The rate-of-change switches (63 and 154) may be used to control a timed-opportunity switch (26 or 172), a conveyance, such as a wheelchair (12), and such functions as extending and retracting leg supports, and/or an environmental control unit (14 or 174). The rate-of-change switches (63 or 154) may be attached to a body member (18, 64, or 67) and be actuated by body-member gestures.

Abstract: A method of operating a personal electronic device and an in-vehicle infotainment system includes running an application on one of the personal electronic device and the in-vehicle infotainment system. It is sensed that the personal electronic device has been, or soon will be, moved into or out of a proximity of the in-vehicle infotainment system. Information regarding a state of the one of the personal electronic device and the in-vehicle infotainment system is transferred to the other of the personal electronic device and the in-vehicle infotainment system. An application is selected for the other of the personal electronic device and the in-vehicle infotainment system. The selected application is used to replicate the state of the one of the personal electronic device and the in-vehicle infotainment system on the other of the personal electronic device and the in-vehicle infotainment system.

Abstract: A vehicle has an apparatus (2) for charging an electrical energy store (3) from a stationary power supply system. An existing controller (6) of the vehicle is configured to calculate and indicate an amount of electrical energy drawn from the stationary power supply system by using a time information item provided in the vehicle controller (6). Alternatively, a battery management system (1) is configured to calculate and indicate the amount of electrical energy drawn from the stationary power supply system by using the time information item provided in the existing vehicle controller (6).

Abstract: A means for electrically connecting a vehicle electrical system to a trailer is disclosed which automatically connects the same when the hitch of the trailer is mounted on the vehicle hitch. Four different embodiments of the invention are disclosed.

Abstract: When a cargo trailer is coupled to a truck, a trailer tracking device on the trailer acquires an identifier of a truck tracking device attached to the truck. The trailer tracking device then transmits a message to a central server indicating that the trailer is coupled to the truck, which message includes the identifiers of the two tracking devices. The central server associates the identifiers of the two tracking devices in a database. When the trailer is decoupled from the truck, the trailer tracking device transmits a message to the central server indicating that the trailer is decoupled. The trailer tracking device then goes into a sleep mode until the trailer is again coupled to a truck, a predetermined time interval expires, a motion sensor indicates trailer movement, location coordinates indicate a geofence violation, or a low battery voltage condition occurs.

Abstract: A brake controller (10) transmits a signal indicative of a braking force to electric brakes (126, 128) of towed equipment, such as a trailer or towed vehicle (120). The brake controller (10) can include at least one characteristic sensor (32), such as an accelerometer, reactive to a braking force applied by the driver of the towing vehicle (110) or to changes in attitude or orientation of the towed equipment. A microprocessor (140) acts upon a signal from the at least one characteristic sensor (32) to determine output settings used to activate the towed equipment braking system for application of sufficient braking force for desired slowing of the towed equipment in concert with the towing vehicle (110). Activation of braking systems of the towed equipment includes the use of wireless signals. Additionally, the use of the right-side brake and the left-side brake for sway control is disclosed.

Abstract: A method for detecting vehicles with trailers in a road toll system, which comprises at least one radio beacon for radio communication with radio OBUs, wherein vehicles and trailers are respectively provided with their own OBUs carried by them, and a vehicle and a trailer are detected as belonging to one another when an evaluation of the radio communications with their OBU indicates that these are moving at a limited and constant distance from one another.

Abstract: Microprocessor-controlled light emitting diode (LED) arrays are built into an extruded tubular lens within a mast that is connected to a base assembly. A means of mounting, which may be an adjustable clamp, permits the base assembly to be connected to a seat post or other mounting point on a bicycle or other vehicle. The tubular lens allows for substantial dispersion of light, and various light patterns produced by the arrays may be selected and those patterns alternated automatically to achieve greater visibility of the vehicle to surrounding motorists. A handle within the base assembly allows a rider to lower the mast from its vertical operating position easily and pivotally up to 90 degrees parallel to the longitudinal axis of the vehicle frame to facilitate mounting and dismounting the vehicle.

Abstract: A flow monitor for monitoring application of a matter through a first flow path having a first outlet and a second flow path having a second outlet. The flow monitor includes a first temperature sensing device positioned adjacent the first outlet. The first temperature sensing device produces a first temperature signal. A second temperature sensing device is positioned adjacent the second outlet. The second temperature sensing device produces a second temperature signal. A signaling device that is remote from the first outlet and remote from the second outlet is activated when the first temperature signal differs from the second temperature signal by a predetermined value.

Abstract: A portable sensor and indication system and method for sensing the position of a trailer body relative to an axle frame and providing an alert signal to an operator when the locking pins on the trailer body and the holes on the axle frame rails are aligned. Once the alert signal is provided, the locking pins may be engaged to lock the trailer body to the axle frame.