Ontario’s speed-limiter legislation pays off as collisions decline

Published: June 29, 2017

Updated: July 24, 2018

Author: Luke Jones



Ontario is celebrating a significant drop in the number of at-fault collisions involving large commercial vehicles that have been caused by speed offences. Since the introduction of speed-limiter legislation in the province, numbers have consistently declines.

A recently published study by the Ontario Ministry of Transportation (MTO) highlights a crash rate drop of 73% since the new laws were brought into action. The speed-limiter laws were introduced across Ontario and it appears commercial drivers are obeying the laws.

Interestingly, the legislation is also having an impact on non-commercial driver, but not to the same levels. The study shows that other vehicle drivers, the average collision rate has dropped by 30%.

MTO may be willing to point out that the results confound early reviews of the speed-limiter legislation. Many were sceptical and believed it would not work in slowing down truck drivers and could even lead to more collision.

However, there is no evidence to show truck collisions have risen since the introduction of the rules in 2009.

MTO conducted the study between 2014 and 2015. The ministry analysed fatal injury and property damage collisions from police reports on highway between 2006 and 2008 (before the legislation was introduced). This data was compared against post-legislation (2010-2012) information.

Among the findings in the study were:

  • Post 2009, large truck drivers produced fewer at-fault speed collisions relative to all at-fault driver actions
  • There is no evidence to suggest worse collision outcomes for large truck drivers post 2009
  • The percentage of truck drivers that were struck from the rear stayed more-or-less the same from pre- to post-legislation (10.03 % of total collisions 2006-2008 and 10.47% 2010-2012), whereas for other drivers the rate increased (18.6% 2006-2008 and 21.3% 2010-2012)