A wrong way vehicle countermeasure system may include at least one movement sensor positioned along a roadway and a wireless communications device. The system may further include a controller configured to cooperate with the at least one movement sensor to detect a wrong way vehicle on the roadway, and responsive to the detection of the wrong way vehicle on the roadway by the movement sensor, wirelessly send a countermeasure command to the wrong way vehicle via the wireless communications device to cause the wrong way vehicle to perform at least one wrong way driving countermeasure.

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for monitoring vehicles traversing a dedicated roadway that includes an at-grade crossing. In some implementations, a system includes a central server, a gate system, and sensors. The gate system provides access to an at-grade crossing for vehicles. The sensors are positioned in a fixed location relative to a roadway, the roadway including the at-grade crossing. Each sensor can detect vehicles on the roadway. For each vehicle, each sensor can generate sensor data and observational data from the generated sensor data. Each sensor can determine a likelihood that the detected vehicle will approach the at-grade crossing by comparing the likelihood to a threshold. In response, each sensor can transmit data to the gate system that causes the gate system to allow the autonomous vehicle access to the at-grade crossing prior to the autonomous vehicle reaching the gate system.

A recommended traveling speed provision program according to one aspect of the present disclosure causes a computer to function as: an acquisition unit configured to acquire, from probe vehicles, pieces of probe information each including information of a time within a predetermined time period and a position of the corresponding probe vehicle at the time; a representative traveling speed calculation unit configured to calculate a representative traveling speed that is a representative value of traveling speeds of the probe vehicles, based on the pieces of probe information acquired by the acquisition unit; a recommended traveling speed calculation unit configured to calculate a recommended traveling speed, based on the representative traveling speed calculated by the representative traveling speed calculation unit; and a provision unit configured to provide the recommended traveling speed calculated by the recommended traveling speed calculation unit to a target vehicle.

A traffic management system and method in which detects the speed of a vehicle approaching an intersection or curve in the roadway and alerts the vehicle via road modules and/or one or more light strips embedded in and/or affixed to the surface of the road to illuminate and/or flash to notify the vehicle that is travelling at excessive speed that can be configured to operate in conjunction with roadway signage. The system can be configured to notify a computer onboard the vehicle traveling at an excessive speed that the vehicle is traveling at an excessive speed. The computer can be located on board an autonomous vehicle.

Disclosed are techniques for traffic flow control. In an aspect, an on-board computer (OBC) of a vehicle of a secondary traffic flow determines that a primary traffic flow is passing through an intersection associated with a traffic light, wherein the determination that the primary traffic flow is passing through the intersection is based on sensor data from one or more sensors of the vehicle, vehicle-to-vehicle (V2V) communication, vehicle-to-everything (V2X) communication, or any combination thereof, and reduces a speed of the vehicle to prevent the vehicle from tripping a traffic light sensor associated with the traffic light until after the primary traffic flow has passed through the intersection.

A method for supplying a signal for at least one vehicle that is located in front of an entry point into a traffic node, it is provided that the method includes a step of detecting a traffic density at an exit point of the traffic node, as well as a step of supplying a signal as a function of the traffic density at an exit point of the traffic node.

Methods and systems are described for providing improved detection of a motor vehicle traveling against a designated direction of travel in a roadway. Multiple signals among various system constituents are checked against each other to ensure the lack of a false wrong way indication otherwise possible by use of a single detector. An alert is provided to the wrong way motor vehicle operator and other vehicle operators in the vicinity of detection. A long-range or cellular communication may be broadcast to further provide an alert of a wrong way event and to dispatch emergency personnel to the vicinity.

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for monitoring vehicles traversing a dedicated roadway that includes an at-grade crossing. In some implementations, a system includes a central server, a gate system, and sensors. The gate system provides access to an at-grade crossing for vehicles. The sensors are positioned in a fixed location relative to a roadway, the roadway including the at-grade crossing. Each sensor can detect vehicles on the roadway. For each vehicle, each sensor can generate sensor data and observational data from the generated sensor data. Each sensor can determine a likelihood that the detected vehicle will approach the at-grade crossing by comparing the likelihood to a threshold. In response, each sensor can transmit data to the gate system that causes the gate system to allow the autonomous vehicle access to the at-grade crossing prior to the autonomous vehicle reaching the gate system.

A method for supplying a signal for at least one vehicle that is located in front of an entry point into a traffic node, it is provided that the method includes a step of detecting a traffic density at an exit point of the traffic node, as well as a step of supplying a signal as a function of the traffic density at an exit point of the traffic node.

The disclosure relates to a driver assistance system for a motor vehicle. The driver assistance system includes a wrong-way driving detection device that detects underway or imminent wrong-way driving of the motor vehicle. The driver assistance system also includes an output device that outputs a signal to a driver of the motor vehicle indicative of a wrong-way driving detection. The driver assistance system, via the output device, is configured to modify an operating state of the infotainment device according to the wrong-way driving detection.