This application discloses an object control system (OCS) to control navigation of a moving vehicle when exiting from its own road or freeway to a new road or freeway. The new road or freeway is an underpass or overpass and have no physical junction with the moving vehicle's own road or freeway. The moving vehicles obtains its navigation information data from the IoT network it is registered with and a plurality of stationary objects near and in vicinity of an exit. The stationary objects during the time slots assigned to them by OCS transmit variety of information data that assist moving vehicle navigating to the right lane and exit. These stationary objects also provide an operation information data that is used in the new road or freeway in case the vehicle exits to a road or freeway that belongs to a new cell with different operation information data.

Among other things, we describe techniques for traffic light estimation using range sensors. A planning circuit of a vehicle traveling on a first drivable region that forms an intersection with a second drivable region receives information sensed by a range sensor of the vehicle. The information represents a movement state of an object through the intersection. A traffic signal at the intersection controls movement of objects through the intersection. The planning circuit determines a state of the traffic signal at the intersection based, in part, on the received information. A control circuit controls an operation of the vehicle based, in part, on the state of the traffic signal at the intersection.

Systems and techniques are described for enabling access and egress to dedicated lanes in a vehicular environment. In some implementations, a system include a central server, a gantry system, and a plurality of sensors. The plurality of sensors are positioned in a fixed location relative to a roadway. Each sensor in the plurality of sensors can detect vehicles in a field of view on the roadway. For each detected vehicle, each sensor can generate sensor data and provide the generated sensor data to the gantry system. The gantry system can receive the sensor data and determine whether the detected vehicle can access the dedicated lane based on the received sensor data. In response to determining the detected vehicle can access the dedicated lane, the gantry system can display an entry speed, open a gate to enable the detected vehicle access, and display an access indicator to the detected vehicle.

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 monitoring system and method may receive detection times at which passage of one or more vehicle systems by a detection device disposed along a route is detected. Locations of the one or more vehicle systems at different times may be received from one or more location sensors disposed onboard the one or more vehicle systems. The locations of the one or more vehicle systems when the one or more vehicle systems were detected by the detection device may be determined by comparing the detection times with the different times associated with the locations. A condition or state of the detection device can be determined by comparing the locations that are determined by the controller with a device location of the detection device.

A vehicle traveling control device includes: a communication unit that communicate with preceding vehicles; a position information acquisition unit that acquires position information on the preceding vehicles and following vehicles around a host vehicle with which the host vehicle can carry out vehicle-vehicle communication; a number of vehicles calculation unit that calculates a reference number of vehicles and an estimated number of vehicles; and a traveling control unit that causes the host vehicle to travel at the traveling position behind the following vehicle if the estimated number of vehicles is larger than the reference number of vehicles.

The invention relates to a luminaire network, comprising a plurality of luminaires comprising a lighting apparatus, wherein a plurality of the luminaires comprise a communication unit configured to enable communication of data between said plurality of luminaires and/or with a central unit; a processing unit; a control unit configured to control the lighting apparatus as well as the communication and processing units and at least one first sensor configured to output first sensed data. The processing unit of the luminaire is configured to process the first sensed data to produce first processed data, and the luminaire network is further configured such that the first processed data of at least two luminaires is further processed to produce second processed data. The invention further relates to a method of processing sensor data in a luminaire network.

The invention relates to a variable speed limit (VSL), ramp metering (RM), and a collaborative method of variable speed limit and ramp metering (VSL-RM) on expressways based on crash risk, including the following steps: 1) calculating the crash risk index within each control step, activating the VSL-RM strategy when the crash risk index exceeds the threshold of the crash risk index, and 2) conduct a multiple-ramp metering strategy, determine the ramps to be controlled and the start-up time for RM, and calculate the integrated ramp regulation rate; 3) execute a variable speed limit strategy to obtain the displayed speed limit value for the segment downstream of the cluster and adjust the ramp regulation rate, mainline desired speed and mainline speed of the segment for the next time period accordingly.

A safety system to prevent a wrong-way vehicle from entering a roadway by driving onto an exit ramp in the wrong direction. A detection system monitors and detects the wrong-way vehicle as soon as it enters the exit ramp in the wrong direction. Upon detecting a wrong-way vehicle, the roadway safety system remotely sends a signal to turn off the motor of the wrong-way vehicle. The system may also record the vehicle's identification and communicate it to a command center to determine the mobile phone number of the owner/driver and call the driver to alert them that they are driving the wrong-way. Alternatively, a series of one or more penetrable and/or impenetrable barriers could be deployed to stop the wrong-way vehicle. The safety system may further include a communications system to communicate to a central office to initiate other alarms and control traffic on the roadway in response to detecting a wrong-way vehicle.

A safety system to prevent a wrong-way vehicle from entering a roadway by driving onto an exit ramp in the wrong direction. A detection system monitors and detects the wrong-way vehicle as soon as it enters the exit ramp in the wrong direction. Upon detecting a wrong-way vehicle, the roadway safety system remotely sends a signal to turn off the motor of the wrong-way vehicle. The system may also record the vehicle's identification and communicate it to a command center to determine the mobile phone number of the owner/driver and call the driver to alert them that they are driving the wrong-way. Alternatively, a series of one or more penetrable and/or impenetrable barriers could be deployed to stop the wrong-way vehicle. The safety system may further include a communications system to communicate to a central office to initiate other alarms and control traffic on the roadway in response to detecting a wrong-way vehicle.