Number of intersections with Traffic Signal Preemption for emergency vehicles; number of CCTV cameras available for emergency management; number of intersections with backup power.
Total Count of Safety Risk Mitigation Tools, 2006-2014
|Year||Intersections with Traffic Signal Preemption for Emergency Vehicles||Intersections with Uninterruptible Power Supply||CCTV Cameras Available for Emergency Management||Total Number of Signalized Intersections|
Intersections with TSP and UPS, 2009-2014
|Year||Percent of Intersections with Traffic Signal Preemption for Emergency Vehicles||Intersections with Uninterruptible Power Supply|
This measure tracks the number of three key emergency management elements at intersections: Emergency Vehicle Preemption (EVP) for traffic signal; the number of Closed Circuit Television (CCTV) cameras available for emergency management; and, the number of intersections with an uninterruptable power supply (UPS). EVP allows emergency vehicles to receive priority when approaching intersections. CCTV allows emergency management and response personnel to view emergencies in real-time. UPS allow intersections to continue operating during power interruptions.
Intersections play an important role in regulating the flow of people and vehicles throughout the County and ensuring a safe operating environment for all users of the transportation system. Emergency Vehicle Preemption (EVP) for emergency vehicles, CCTV cameras for emergency management, and intersection with backup power are each critical role in maintaining this safe environment. EVP preempts traffic signals to allow emergency vehicles to cross intersections safely while minimizing travel time. CCTV allows emergency management and response personnel to view emergencies in real-time and better coordinate the response and allocate resources. UPS ensures that traffic signals remain operational during a power outage, providing for the safe movement of vehicles. This measure supports the MTP Goal 3: Promote Safety.
Since 2006, the number of signalized intersections in the County increased from 250 to 294. During the same time period, the number of intersections with CCTV available rose from 20 to 159, with an average of CCTV added at 18 intersections per year. The County installed TSP at 48 intersections and UPS at 46 intersections between 2009 and 2014.The County ultimately plans on installing CCTV at about 290 intersections and UPS and TSP at all intersections, if conditions permit.
- Arlington DOT Transportation Engineering and Operations internal data.