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Traffic Signals and Systems

The County is responsible for approximately 42 traffic signals in the region. Routine maintenance is completed annually for every installation. In addition, emergency maintenance is performed as required with immediate response.

Traffic Monitoring

Information and data about traffic is collected for many reasons, including:

  • Planning initiatives to manage traffic demand during peak periods
  • Developing annual capital plans & supporting transportation policies and programs
  • Assisting in design characteristics of reconstructed roads

2 main traffic volume measures are used in traffic analysis:

  • Annual average daily traffic (AADT)
  • Turning movement counts (TMCs)

Most current traffic volume data on County Roads is available free of charge on our public mapping site or can be requested for an administration fee:

Traffic Data Description


Most current traffic data (AADT) on County Road System


Historical Traffic Data on County Road System


Review of Transportation (Traffic) Impact Studies that affect a County Road


Transportation (Traffic) Impact Studies

All new development has an impact on the road system. A transportation (traffic) impact study must be submitted by a developer and approved by the County before a site plan can be approved.

Contact the Engineering Department for specific requirements for the study.