RODEL INTERACTIVE NORTH AMERICA

Rodel is based on research and field observations taken by the Transport Research Laboratory (TRL). This includes investigation of approximately one million vehicles at 86 roundabout sites during 11,000 minutes of "at capacity" operation. Study results are summarized by lead researcher Dr. Rod Kimber in The Traffic Capacity of Roundabouts (TRL, 1980)... During a period from approximately 1974 to 1980, professor Rod Kimber, then Head of Junction Design at the Transportation Research Laboratory (TRL), conducted controlled test track experiments on 35 roundabout layouts and analyzed data from almost one million vehicles during 11,000 minutes of "at capacity operations" on 86 field roundabouts covering the full range of geometric and traffic conditions. The studies produced "Kimber's Equations," which are used to accurately estimate the capacity of roundabout entries based on six geometric parameters. The research evaluated 35 different geometric parameters, and determined that only six..

Also known as: Rodel, Rodel Interactive North America, LLC