“Aimed at shortening emergency response time to help save lives, Traffic Signal Preemption allows vehicles such as ambulances and fire trucks to remotely trigger a green light,” he said. “Related C-V2X applications share this information with nearby vehicles so drivers can take action to move out of the way, reducing congestion along the route to improve safety for first responders and road users alike.” Offering both an early green light as well as extend-
ing green phase, Traffic Signal Priority can help buses and other designated vehicles maintain their schedule by allowing them to queue jump—enter the traffic flow without having to wait in a line of vehicles—such as me- tered freeway onramps and experience efficient passage through intersections, Misener added. Qualcomm has performed a C-V2X pilot project for the
Cajon Valley Unified School District near San Diego, Cal- ifornia. A district spokesperson would not go on record about the project. A use case illustrating deployment of Qualcomm Tech-
nologies’ solutions includes safety applications in school zones in which C-V2X notifies drivers of a reduced speed
limit when they’re entering an active school zone. Audi, Applied Information Inc., Blue Bird, the City of
Alpharetta, Georgia, Fulton County Schools, and Tem- ple Inc. collaborated to develop and demonstrate C-V2X technologies to lessen accidents and fatalities. Caryn Vorster, Applied Information’s director of
communications, said that through this program, part- ners seek insights on two safety applications. One is to warn drivers when entering an active school zone and exceeding the speed limit when children are present. The other warns drivers when approaching a school bus stopped to pick up or drop off students in school zones. The project utilized a Blue Bird propane-powered school bus operated by Fulton County Schools, a 2021 Audi e-tron Sportback electric SUV, Applied Information RSU (road-side unit) and OBU (on-board unit) equipped with Qualcomm C-V2X solutions and Alpharetta school zone infrastructure. In the first application, the driver entered an active school zone with school zone safety beacons equipped with an RSU sending a direct, low-latency signal to the Audi vehicle with embedded C-V2X technology, which
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