Right hand turn geometry at urban arterial intersections in Edmonton : guidelines for different geometric treatments for different conditions.

The City of Edmonton uses the Transportation Association of Canada's (TAC) Geometric Design Guide for Canadian Roads as the basis for its roadway design standards. While using the TAC guide as a base, the City developed their own specific geometric standard for Arterial/Arterial intersections. The City has had concerns over the suitability of a single geometric standard for all situations at arterial intersections, and commissioned Infrastructure Systems Limited (ISL) to review the current standard and to develop guidelines for use of several different right-hand turn geometric treatments that designers can choose from, to better fit the conditions expected at urban arterial intersections. The guidelines developed for Edmonton may be of interest to other communities who may wish to consider the proposition that the use of a single intersection design standard may not be the best approach. For the covering abstract of this conference see ITRD number E211395.