Traffic control system, vehicle control system, traffic regulation system, and traffic control method

摘要

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.

主权项

1. A traffic control system comprising:
an infrastructure device that sets a target vehicle travel speed based on a correlation between a vehicle travel speed and a traffic volume; a road-vehicle communication device that transmits the target vehicle travel speed to multiple vehicles that are on a road and are each capable of controlling their travel in accordance with the target vehicle travel speed, the vehicles automatically controlling engine and brake systems of each of the vehicles based on the target vehicle travel speed; wherein
the infrastructure device determines a predicted traffic volume at a vehicle travel direction ahead region that is located ahead of the multiple vehicles on the road in a vehicle travel direction; andthe infrastructure device sets the target vehicle travel speed based on the predicted traffic volume such that a volume of traffic that flows at the target vehicle travel speed in the vehicle travel direction ahead region is equal to or larger than the predicted traffic volume and is within a travel speed range that avoids a shift in traffic volume to a critical phase at which traffic congestion may result from external disturbances causing the traffic volume to exceed a critical density.