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Vehicles Relinquish Speed Control to Pass Quickly through an Intersection

IP.com Disclosure Number: IPCOM000200471D
Publication Date: 2010-Oct-15
Document File: 2 page(s) / 57K

Publishing Venue

The IP.com Prior Art Database


Disclosed is an intersection management system (IMS) that wirelessly controls the brake and throttle systems of vehicles passing through an intersection in order to manage the flow of traffic and increase efficiencies in terms of time and energy.

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Vehicles Relinquish Speed Control to Pass Quickly through an Intersection

Typical traffic management systems rely on timers and road sensors to detect the presence of automobiles. This limits the time and energy efficiency of the system.

The disclosed solution is an intersection management system (IMS) that improves traffic flow by allowing vehicles to travel more quickly and increases energy efficiency. The system identifies the position and velocity of each vehicle passing through an intersection, has throttle and brake control of each vehicle, and manipulates the vehicles such that, in low-to-medium traffic, each vehicle passes through the intersection without stopping. Each vehicle's position is tracked by a global positioning system (GPS) or similar method, and each has a throttle and brake subsystem that switches from local to wireless control. The driver still controls steering.

There are four zones of control around the intersection: (see Figure)
• The outermost zone 4 is the zone without IMS control or influence, and the throttle and brakes are controlled by the driver.

• In zone 3, vehicles are detected by the IMS, and the IMS establishes control over the throttle for each vehicle entering the zone.

• All vehicles in zone 2 are under IMS throttle control.
• Zone 1 is the exclusive zone: only one vehicle can pass through zone 1 at a time. The size of zone 1 is dependent upon traffic density. If there is less traffic, then the IMS increases the size of zone 1 and decreases proximity between any two vehicles. If there is more traffic, then the IMS decreases the size of zone 1 and allows greate...