Abstract: A connected vehicle train-vehicle collision detection system comprises a roadside unit (RSU) located at a railroad grade crossing near a roadway lane for avoiding TRAIN crashes with Onboard Unit (OBU)-equipped vehicles by issuing advance warnings for a potential vehicle-train crash. The roadside unit (RSU) is configured to act as a proxy Onboard Unit (OBU) for a non-OBU-equipped TRAIN and transmit a train location to a first Onboard Unit (OBU)-equipped vehicle having an Onboard Unit (OBU). The Onboard Unit (OBU) of the first OBU-equipped vehicle is configured to calculate a train-vehicle crash based on the train location of the TRAIN relative to the railroad grade crossing and a vehicle location of the first OBU-equipped vehicle relative to the railroad grade crossing.

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.

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.

Abstract: A connected vehicle train-vehicle collision detection system comprises a roadside unit (RSU) located at a railroad grade crossing near a roadway lane for avoiding TRAIN crashes with Onboard Unit (OBU)-equipped vehicles by issuing advance warnings for a potential vehicle-train crash. The roadside unit (RSU) is configured to act as a proxy Onboard Unit (OBU) for a non-OBU-equipped TRAIN and transmit a train location to a first Onboard Unit (OBU)-equipped vehicle having an Onboard Unit (OBU). The Onboard Unit (OBU) of the first OBU-equipped vehicle is configured to calculate a train-vehicle crash based on the train location of the TRAIN relative to the railroad grade crossing and a vehicle location of the first OBU-equipped vehicle relative to the railroad grade crossing.