TAC Releases the Geometric Design Guide for Canadian Roads (2017 edition)

Tuesday, June 20, 2017

Now available in the TAC Bookstore

The Transportation Association of Canada (TAC) has released the 2017 edition of the Geometric Design Guide for Canadian Roads (GDG) in its online Bookstore, following the completion of a three-year project.

Sarah Wells, TAC’s Executive Director, says the Guide is a fundamental reference document for roadway design practitioners used to varying extents by every jurisdiction in Canada. First released in 1963, with the last full new edition published in 1999, the Guide has contributed to the consistent and safe development and expansion of regional, provincial, and national roadway and highway systems in Canada.

Replacing the 1999 edition and subsequent revisions, the GDG contains updated design and human factors research and practices for roadway geometric design in urban and rural environments. It provides guidance to planners and designers in developing design solutions meeting the needs of all road users. 

The 2017 edition includes 10 chapters highlighting design philosophy; design controls, classification and consistency; alignment and lane configurations; cross section elements; bicycle integrated design; pedestrian integrated design; roadside design; access; intersections and interchanges. 

The Geometric Design Guide for Canadian Roads can be purchased in its entirety (order number PTM-GEODES17-E) at $575 for TAC members; $749 for non-members and $225 for students, or by separate chapters. Each chapter is available in both e-book and print formats. The Guide is currently being translated, and the release of the French edition is expected in 2018.

A recording of a live webinar, providing an overview of new content and key changes found in the 2017 edition, can be viewed. A cross-Canada program of one and two-day seminars is also being developed to educate practitioners about geometric design in general and new Guide content in particular. Three leading experts and authors of the Guide will lead the seminars. 

The Guide is complemented by the Canadian Roundabout Design Guide, which provides information and guidance related to the planning, design, construction, operation, maintenance and safety of roundabouts in Canada. 


The Geometric Design Guide for Canadian Roads was developed under the supervision of a Project Steering Committee of volunteer members, financially supported by numerous funding partners.

The development of the Guide was led by a consulting team of practitioners from the WSP|MMM Group and Stantec Consulting Ltd.

A substantial portion of the Guide includes contents adapted from the 1999 Geometric Design Guide for Canadian Roads, an update to the 1986 Manual of Geometric Design Standards for Canadian Roads and the 1995 Urban Supplement to the Geometric Design Guide for Canadian Roads