Abstract: Disclosed herein is a virtual pedestrian traffic light (VPTL) system and method that provides an infrastructure-free way to provide the right-of-way to pedestrians at intersections. The invention is most effective when integrated with existing virtual traffic light (VTL) systems to provide complete infrastructure-free control of traffic at intersections.

Abstract: Disclosed herein is a virtual pedestrian traffic light (VPTL) system and method that provides an infrastructure-free way to provide the right-of-way to pedestrians at intersections. The invention is most effective when integrated with existing virtual traffic light (VTL) systems to provide complete infrastructure-free control of traffic at intersections.

Abstract: Systems, methods, algorithms, and software for DSRC-actuated traffic control are presented. The invention leverages the presence of DSRC radios in vehicles and gives priority (by displaying green light) to approaches (roads) that include DSRC-equipped vehicles.

Abstract: Disclosed herein is a virtual pedestrian traffic light (VPTL) system and method that provides an infrastructure-free way to provide the right-of-way to pedestrians at intersections. The invention is most effective when integrated with existing virtual traffic light (VTL) systems to provide complete infrastructure-free control of traffic at intersections.

Abstract: A system and method for providing virtual traffic lights in non-ideal situations in which vehicle-to-vehicle communication between IDLE vehicles approaching an intersection may be blocked by buildings or other obstructions at the corners of the intersection is presented. The method, using a distributed artificial intelligence approach, requires that vehicles approaching an intersection, unless receiving a message indicating that another vehicle at intersection has been declared the lead vehicle for purposes of controlling access to the intersection, must slow down or stop at the intersection to and assume the role of lead vehicle.

Abstract: Systems, methods, algorithms, and software for DSRC-actuated traffic control are presented. The invention leverages the presence of DSRC radios in vehicles and gives priority (by displaying green light) to approaches (roads) that include DSRC-equipped vehicles.

Abstract: A method of implementing an intelligent traffic control apparatus comprising providing a traffic control apparatus with a reinforcement learning based control system for a given traffic location; training the reinforcement based control system for the given traffic location on a simulator that simulates the given traffic location in a training environment, wherein the reinforcement learning based control system receives only partial traffic detection in the training environment on the simulator; and coupling the reinforcement learning based control system to the traffic control apparatus at the given traffic location after training. Specifically, the reinforcement learning based control system to the traffic control apparatus can function with improved results over current controls when less than 80%, and generally at least 5%, of vehicles are detected.

Abstract: A cationic copolymer represented by the following formula (I) has a viscosity average molecular weight in a range from 2 million to 10 million. In the cationic copolymer, the mole fractions of three structural units corresponding to three monomers are as follows: x being in a range from 0.01 to 20%, y being in a range from 0 to 15%, and z=1?x?y. When used in the construction of leaking stoppage in an oil well, a cationic chemical lost circulation additive prepared with the cationic copolymer is mixed with an anionic drilling fluid in a section of the wellbore where lost circulation occurs. Then neutral reaction and cross linking reaction occur, so that the viscosity of the resulting mixture rapidly increases to form a space grid structure. This blocks off the leakage path, and thus effects on efficient leaking stoppage in a short time period.

Abstract: A cationic copolymer represented by the following formula (I) has a viscosity average molecular weight in a range from 2 million to 10 million. In the cationic copolymer, the mole fractions of three structural units corresponding to three monomers are as follows: x being in a range from 0.01 to 20%, y being in a range from 0 to 15%, and z=1?x?y. When used in the construction of leaking stoppage in an oil well, a cationic chemical lost circulation additive prepared with the cationic copolymer is mixed with an anionic drilling fluid in a section of the wellbore where lost circulation occurs. Then neutral reaction and cross linking reaction occur, so that the viscosity of the resulting mixture rapidly increases to form a space grid structure. This blocks off the leakage path, and thus effects on efficient leaking stoppage in a short time period.