CONNECTED VEHICLE TRAFFIC SAFETY SYSTEM AND A METHOD OF WARNING DRIVERS OF A WRONG-WAY TRAVEL
First Claim
1. A connected vehicle traffic safety system, comprising:
- a traffic signal controller configured to operate first and second traffic signals S1, S2 or configured to act as if a traffic signal was present as a “
virtual”
traffic signal, wherein the first traffic signal S1 is facing a right-way traffic and is set to dwell permanently in a GREEN signal phase and the second traffic signal S2 is facing a wrong-way traffic and is set to dwell permanently in a RED signal phase; and
a roadside unit (RSU) configured to be located at a highway exit ramp being a one-way traffic lane, the roadside unit (RSU) comprising at least a processor and a wireless transceiver, wherein the roadside unit (RSU) configured to transmit wireless signals and receive corresponding responses from a corresponding wireless device of a first Onboard Unit (OBU)-equipped vehicle having an Onboard Unit (OBU),wherein the roadside unit (RSU) is configured to transmit a Signal Phase and Timing (SPaT) indication for both the GREEN signal phase and the RED signal phase, the SPaT indication of the RED signal phase continually indicates a maximum countdown time to the GREEN signal phase and the SPaT indication of the GREEN signal phase continually indicates a maximum countdown time to the RED signal phase,wherein the one-way traffic lane is configured as a signalized intersection with two approaches, wherein the two approaches include a right-way approach that is programmed as a traffic signal phase dwelling in GREEN and a wrong-way approach that is programmed as a traffic signal phase dwelling in RED, andwherein the Onboard Unit (OBU) of the first OBU-equipped vehicle travelling in a wrong direction is configured to calculate a RED light violation based on at least one of vehicle location data, direction heading data, and speed data provided from the first OBU-equipped vehicle and the SPaT indication of the RED signal phase.
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Accused Products
Abstract
A connected vehicle traffic safety system comprises a traffic signal controller and a roadside unit (RSU) located at a one-way traffic lane for avoiding crashes with vehicles of wrong-way drivers by issuing warnings for wrong-way violations. The traffic signal controller is configured to operate a traffic signal. The traffic signal is facing a wrong-way traffic and is set to dwell permanently in a RED signal phase. The one-way traffic lane is configured as a signalized intersection with a wrong-way approach that is programmed as a traffic signal phase dwelling in RED. The roadside unit (RSU) is configured to transmit a Signal Phase and Timing (SPaT) indication for the RED signal phase. A first Onboard Unit (OBU)-equipped vehicle having an Onboard Unit (OBU) that is configured to calculate a RED light violation based on at least one of vehicle location data, direction heading data, and speed data provided from the first OBU-equipped vehicle and the SPaT indication of the RED signal phase to detect the first Onboard Unit (OBU)-equipped vehicle as a wrong-way vehicle.
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Citations
20 Claims
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1. A connected vehicle traffic safety system, comprising:
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a traffic signal controller configured to operate first and second traffic signals S1, S2 or configured to act as if a traffic signal was present as a “
virtual”
traffic signal, wherein the first traffic signal S1 is facing a right-way traffic and is set to dwell permanently in a GREEN signal phase and the second traffic signal S2 is facing a wrong-way traffic and is set to dwell permanently in a RED signal phase; anda roadside unit (RSU) configured to be located at a highway exit ramp being a one-way traffic lane, the roadside unit (RSU) comprising at least a processor and a wireless transceiver, wherein the roadside unit (RSU) configured to transmit wireless signals and receive corresponding responses from a corresponding wireless device of a first Onboard Unit (OBU)-equipped vehicle having an Onboard Unit (OBU), wherein the roadside unit (RSU) is configured to transmit a Signal Phase and Timing (SPaT) indication for both the GREEN signal phase and the RED signal phase, the SPaT indication of the RED signal phase continually indicates a maximum countdown time to the GREEN signal phase and the SPaT indication of the GREEN signal phase continually indicates a maximum countdown time to the RED signal phase, wherein the one-way traffic lane is configured as a signalized intersection with two approaches, wherein the two approaches include a right-way approach that is programmed as a traffic signal phase dwelling in GREEN and a wrong-way approach that is programmed as a traffic signal phase dwelling in RED, and wherein the Onboard Unit (OBU) of the first OBU-equipped vehicle travelling in a wrong direction is configured to calculate a RED light violation based on at least one of vehicle location data, direction heading data, and speed data provided from the first OBU-equipped vehicle and the SPaT indication of the RED signal phase. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method to avoid crashes with wrong-way drivers driving a first Onboard Unit (OBU)-equipped vehicle having an Onboard Unit (OBU) in a wrong way on a highway exit ramp being a one-way traffic lane, the method comprising:
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configuring a traffic signal controller for the one-way traffic lane as a signalized intersection with two approaches, wherein the two approaches include a right-way approach that is programmed as a traffic signal phase dwelling in GREEN and a wrong-way approach that is programmed as a traffic signal phase dwelling in RED; transmitting a Signal Phase and Timing (SPaT) indication for the RED signal phase, wherein the SPaT indication of the RED signal phase continually indicates a maximum countdown time to the GREEN signal phase; detecting the first Onboard Unit (OBU)-equipped vehicle as a wrong-way vehicle; and handling the first Onboard Unit (OBU)-equipped vehicle as a red light violator using a connected vehicle traffic safety system comprising the traffic signal controller and a roadside unit (RSU). - View Dependent Claims (13, 14, 15, 16, 17)
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18. A connected vehicle traffic safety system, comprising:
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a traffic signal controller configured to operate a traffic signal or configured to act as if a traffic signal was present as a “
virtual”
traffic signal, wherein the traffic signal is facing a wrong-way traffic and is set to dwell permanently in a RED signal phase; anda roadside unit (RSU) configured to be located at a one-way traffic lane, wherein the one-way traffic lane is configured as a signalized intersection with a wrong-way approach that is programmed as a traffic signal phase dwelling in RED, wherein the roadside unit (RSU) is configured to transmit a Signal Phase and Timing (SPaT) indication for the RED signal phase, wherein the SPaT indication for the RED signal phase continually indicates a maximum countdown time to the GREEN signal phase, wherein a first Onboard Unit (OBU)-equipped vehicle having an Onboard Unit (OBU) that is configured to calculate a RED light violation based on at least one of vehicle location data, direction heading data, and speed data provided from the first OBU-equipped vehicle and the SPaT indication of the RED signal phase to detect the first Onboard Unit (OBU)-equipped vehicle as a wrong-way vehicle. - View Dependent Claims (19, 20)
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Specification