Road Safety Audits


The TNS team has extensive experience carrying out Road Safety Audits (RSAs) consistent with the methodology included in the Canadian Road Safety Audit Guide (the ‘Canadian RSA Guide’). We employ a customized RSA prompt list to help guide the scope of the reviews that reflects the nature of the roadways, the stage of the project, client-specific needs, policies, and standards. We apply the tenets of the Canadian RSA Guide and supplement with industry best practice related to human factors, positive guidance, universal design, and pedestrian and bicyclist safety.


Safety Audit Services:

  • Preliminary risk assessments
  • In-service safety reviews
  • Functional and preliminary design audits
  • Detailed design audits
  • Construction staging audits
  • Pre-opening or post-construction audits

Current/Recent Audits:


MacLaren and Lyon Road Safety Audits | City of Ottawa | 2021


TNS was retained through Robinson Consultants to conduct road safety audits (RSAs) of the reconstruction projects of MacLaren Street and Lyon Street in Ottawa. As part of the contract between Robinson Consultants and the City, multi-modal RSAs were required at the functional and preliminary design stages. 



Trillium Passenger Rail System | City of Ottawa | 2019 - Ongoing



SNC-Lavalin was retained by the City of Ottawa for the delivery of engineering services for the planning, design, construction and commissioning of the Ottawa Trillium Passenger Rail System and the associated road, transit, pedestrian, and bicycle facilities. TNS was retained as a sub-consultant to complete RSAs of 3.2 km of roadways, seven intersections and two park and ride facilities at the 60% design, 99% design, and post-construction stages. 

Highway 400/Jane Street Rehabilitation | Ministry of Transportation of Ontario | 2018-2020


TNS was retained by Stantec as a sub-consultant to complete an active transportation review and a temporary conditions RSA for the rehabilitation of eight bridge structures at the Highway 401/Jane Street interchange in the City of Toronto. The temporary conditions RSA included a comprehensive review of the complex 90% staging plans over multiple years and stages from a road user safety perspective. This review encompassed positive guidance, road user workload, visibility, speed control, conflict recognition, and decision-making activities on the approach and at key conflict areas through the temporary conditions on arterial and freeway facilities.


Highway 405 Queue and Stopped Vehicle Advisory System | Ministry of Transportation of Ontario | 2020-ongoing


TNS was retained by Black and MacDonald to complete RSAs of the Queue and Stopped Vehicle Advisory System at the 99% design, and post-construction stages.