Abstract Manager

The choice of cross section elements to be included in the right-of-way has a high impact on the sustainability of transportation infrastructure. To make these choices and select appropriate dimensions, jurisdictions across Canada turn to Chapter 4 - Cross Section Elements of the Geometric Design Guide for Canadian Roads as a trusted reference, particularly when supplementing or developing their own guidance. Since the last publication of Chapter 4 in 2017, changes in scientific knowledge, best practices, and priorities have occurred that may warrant modifications to the guide. Discover the lessons learned from the research and synthesis of practice that will help the Geometric Design Committee scope the extent and nature of changes in an eventual revision to Chapter 4.

The presentation will discuss the methods used to evaluate the need for guidance updates, including a national and international literature review and various engagement activities with practitioners across the country. Findings from these activities point to a need to adjust or supplement cross sectional guidance to better support sustainable transportation design. From discussing the Complete Streets lens, to adding Low Impact Development (LID) considerations, and expanding the discussion on snow clearing to urban environments, discover the recommended potential scope of changes to Chapter 4 that will help transportation practitioners make more informed decisions to support social, environmental, and economic sustainability.