Traffic Signal Performance Measures in a Small Urban Area Colin Kinton, PE Director of Transportation Engineering Beaufort County, SC

Beaufort Traffic Signal History 2005: Beaufort County Traffic Engineering Department Formed 40 Traffic Signals (170 Controllers) 2 Coordinated Systems 2017: 100 Percent-2070 Controller Deployment 85 Traffic Signals (80 Percent on Network) 8 Coordinated Corridors 1 Traffic Responsive Corridor Countywide Traffic Data Management System

Traffic Fluctuations Coastal, Low-Lying Area Between Savannah and Charleston Summer Vacation and Tourist Destination Hilton Head Island Fripp and Hunting Islands Historic Downtown Beaufort Parris Island Marine Recruit Depot Graduation Summer and Weekend Timing Plans Special Shopping Plans for Thanksgiving and Winter Holidays Hurricane Evacuation Timing Plans

Staffing County Traffic & Transportation Engineer Signal Systems Engineer Signal Technicians (3)

County Network Leased Fiber & Dark Fiber Cellular Modems IP Point-to-Point Radios 8-Port Network Switches in Cabinets Central Based Software on Virtual Servers Signal System (Trafficware ATMS.now) Data Management (Sensys Networks) Emergency Preemption (Opticom CMS) PTZ Cameras

Traffic Signal Performance Measure Needs Scalable Expandable Cost Effective Seamless with Traffic Signal Detection (one system) Simple Reporting Minimal Staffing Available Local Server and Cloud Based Alternatives

Scalable Small Isolated Intersections Large High Volume Corridors Minimize Multiple/Duplicate Devices Minimize Technician Staff Time for Maintenance Simplify System Management

Automated Data Needs Traffic Turning Volumes Arrivals on Green / Arrivals on Red Traffic Signal Phase Times Delays Vehicle Speeds / Average Corridor Speeds Travel Times Origin-Destination Data

Automated Signal Performance Measures – Test Location Sensys Networks Implementation Traffic Turning Volumes Signal Coordination Response to Construction Identify Delay Spikes by Time of Day and Day of Week Signal Re-timing

Future Boundary Street Corridor Project (TIGER Funded) 1.5 Mile Urban Arterial Complete Street Project with Emphasis on Pedestrian/Bike Friendly Encouraging Redevelopment 7 Signals (5 Existing, 2 New) Traffic Adaptive Implementation Automated Traffic Signal Performance Measures (Automated TMCs, Travel Time, O-D, AADT, Delays, Corridor Speed, Delays) Utilizing Sensys Networks Downtown Moveable Bridge ITS (Travel Time and Delay Management)