Salem Smart Intersections Deployment Support
Project Description: This Project will assess Smart Intersection Deployment to support Vulnerable Road User Safety. The preliminary engineering phase will involve a review of the entire State to determine equipment installation locations. The intent is to test advanced traffic signal equipment and, if acceptable by the stakeholders and the contractor's IT Security team, and transfer ownership of the equipment to VDOT. The system will read signal phase data from signal controller via SDLC connection at Salem sites. Sites for testing were identified based on local knowledge of safety issues and locations identified in the VDOT Pedestrian and Bicycle Safety Plan (PBSAP).
Project Status: Planned
Project Stakeholders:
Interconnect and Flow
Diagrams
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Project Information Flows:
Project Functional Requirements (Element - Functional Object):
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VDOT Salem District Field Equipment - Roadway Signal Control
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1: The field element shall control traffic signals under center control.
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15: The field element shall provide to roadside equipment the intersection geometry and signal phase movement information including phase and timing information, alarm status, and priority/preempt status.
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16: The field element shall provide data to the Connected Vehicle Roadside Equipment.
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18: The field element shall report right-of-way request impacts to signal timing (preemption, priority, pedestrian calls) to other field elements at adjacent intersections.
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2: The field element shall respond to pedestrian crossing requests by accommodating the pedestrian crossing.
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3: The field element shall provide the capability to notify the traffic management center of pedestrian calls and pedestrian accommodations.
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4: The field element shall report the current signal control information to the center.
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VDOT Salem District Field Equipment - RSE Intersection Safety
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3: The roadway equipment shall collect vehicle path information sent by a vehicle.
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4: The roadway equipment shall provide current crossing status including permission to cross, crossing time remaining.
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7: The field element shall collect current conflict monitor and intersection control data from the traffic signal controller.
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VDOT Southwestern TOC/ATMS - TMC Intersection Safety
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1: The center shall provide current intersection safety status information.
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4: The field element shall be capable of providing intersection priority for pedestrians or bicyclists based upon requests from the pedestrians or bicyclists
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5: The field element shall be capable of configuring roadside equipment to perform the collection and transmission of information to support intersection safety.
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VDOT Southwestern TOC/ATMS - TMC Signal Control
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1: The center shall remotely control traffic signal controllers.
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13: The center shall process collected traffic and environmental data from sensors and connected vehicles.
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15: The center shall monitor, analyze, and store traffic sensor data (speed, volume, occupancy) collected from field elements at or near signalized intersections.
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16: The center shall maintain a database of traffic sensors and associated data (including the roadway on which they are located, the type of data collected, and the ownership of each).
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17: The center shall remotely control devices to detect traffic in the vicinity of traffic signals.
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2: The center shall accept notifications of pedestrian calls.
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3: The center shall collect traffic signal controller operational status and compare against the control information sent by the center.
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4: The center shall collect traffic signal controller fault data from the field.
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6: The center shall implement control plans to coordinate signalized intersections based on data from sensors.
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9: The center shall implement control plans to coordinate signalized intersections based on data from sensors and connected vehicles.
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Vehicle - Connected - Vehicle Basic Safety Communication
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1: The vehicle shall collect location and motion data from the vehicle platform.
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10: The vehicle shall determine the status of host vehicle systems including vehicle speed, heading, yaw, wheelspin, ABS, traction control, and wiper status.
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6: The vehicle shall exchange location and motion information with roadside equipment and nearby vehicles.
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Vehicle - Connected - Vehicle Control Automation
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4: The vehicle shall collect location and motion data from the vehicle platform.
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Vehicle - Connected - Vehicle Control Warning
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1: The vehicle shall monitor the area to the sides of the vehicle to determine the proximity of other objects to the vehicle and if a warning is needed.
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Vehicle - Connected - Vehicle Intersection Warning
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4: The vehicle shall be capable of providing warnings to the driver based upon information received regarding pedestrians, cyclists, and other non-motorized users that are sharing the roadway with the vehicle.
Standards:
Project Operational Concepts:
Last Updated 5/22/2026
