TPW - Traffic Presubmittal Resource Documents

Overview

  • Traffic Engineering’s areas of review include: Traffic control devices and traffic Impact Analysis/Traffic Studies. 
  • Traffic Engineer reviews all submitted site plans. 
  • It is important if your project requires a TIA to submit plans as early as possible to trafficengineering@accgov.com. If a TIA indicates a signal installation is warranted, for a project timeline understanding, all signal installations for ACCGov roadways or State Routes must be approved the ACCGov Mayor and Commission. More information regarding signal installation procedure is in the Traffic Engineering permit overview.

Traffic Impact Analysis 

  • When a project expects to generate 100 trips in an hour or 1,000 trips in a 24-hour period a TIA is required.  The TIA is to be submitted as early in a project as possible and must be submitted with Planned Development applications and Plans Review submittals. If TIA was submitted with Planned Development, it will be required to be resubmitted when Civil plans are submitted for Plans Review. TIA fee will be paid at Plans Review Submittal and included as part of submittal package. Please additionally submit TIA to Trafficengineering@accgov.com. 
  • No additional form/application is required with a TIA submittal. 
  • Traffic counts and turning movements must be current (within six months of submission of TIA for review)
  • Turning movements counts typically require to be from Tuesday, Wednesday, or Thursday and require peak am and pm peak hours. Some locations will require addition noon hour counts. 
  • Traffic counts must be when Athens-Clarke County schools and UGA are in session.
  • Unless prior approval is granted by Traffic Engineering, weekend dates and holidays may not be used for Traffic counts.
  • Projects also needs to look at the viability of a roundabout at the impacted intersections and include in submitted TIA. Roundabout are fully funded by the developer, 
  • All intersection upgrades should be evaluated using GDOT’s Intersection Cost Evaluation tool (see resources). 
  • For acceleration, deceleration and turn lanes, refer to GDOT standards to determine if required. 
  • ACC and GDOT require the use of ICE Analysis tool for signal warrant/round about analysis.
  • All plans should include a sight triangle for all driveways with no trees inside the sight triangle. See Transportation and Public Works Standard Details 2-010 and 2-020 (link below). Further information on sight triangles found in Section 7-2-7L, 7-2-7K, and 9-15-2C of Athens Clarke County Code of Ordinances.
  • All TIA are required to include:
    1. All proposed site access points.
    2. All intersections bordering or adjacent to the site frontage including the closet intersection collector or arterial street.
    3. Any road segment or intersection where the proposed development can be expected to generate more than 25 additional vehicle trips during a single hour.
    4. Any road segment or intersection where the additional traffic volumes created by the proposed development is greater than 10 percent of the current traffic volume (for road segments) or the current entering volume (for intersections)
    5. The analysis shall include the following study time frames:
      • Existing conditions
      • Full site build out conditions
      • Five-year forecast
  • The TIA Report shall include those items required by the Athens-Clarke County Traffic Impact Report Standards, adopted by the Athens-Clarke County Mayor and Commission by resolution. The final scope of the traffic study may be administratively adjusted by the traffic engineer based on the current or projected traffic conditions on the roads in the vicinity of the proposed development or if the development includes a land use change.

Presubmittal Resources