Author
Davis, Joy, et al.
Benefit Summary HTML

On-ramp signals or ramp meters are used to control the number of vehicles allowed to enter a freeway to allow for smoother merging at on-ramps. North Carolina Department of Transportation (NCDOT) commissioned a study to assess the first-year operational impacts of four on‐ramp signals which were installed along Interstate 540 in North Carolina in September 2017. Signals were positioned on the westbound lanes of four on-ramps in Wake County and have been regularly activated Monday to Friday from 6:30 ‐ 9:00 am. Researchers analyzed the impacts to traffic using data collected in the affected area from numerous sources, both before and after the installation of on‐ramp signals. When feasible, the costs and benefits of the on‐ramp signals were monetized using benefit cost analysis methods.

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On-ramp signals or ramp meters are used to control the number of vehicles allowed to enter a freeway to allow for smoother merging at on-ramps. North Carolina Department of Transportation (NCDOT) commissioned a study to assess the first-year operational impacts of four on‐ramp signals which were installed along Interstate 540 in North Carolina in September 2017. Signals were positioned on the westbound lanes of four on-ramps in Wake County and have been regularly activated Monday to Friday from 6:30 ‐ 9:00 am. Researchers analyzed the impacts to traffic using data collected in the affected area from numerous sources, both before and after the installation of on‐ramp signals. When feasible, the costs and benefits of the on‐ramp signals were monetized using benefit cost analysis methods.

Pages
72
Priority Research Area
Publication Sort Date
Publisher
Prepared by Institute for Transportation Research and Education for North Carolina DOT
Result Type
Title
Post‐Installation Evaluation of the Effects of Ramp Metering in North Carolina
Project Category
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