SlopeCanada
Traffic rules
Canada
1. Slope
A slope is a section of road that rises or descends noticeably. A steep slope can affect vehicle speed, braking distance, traction, visibility and the ability of heavy or low-powered vehicles to maintain a steady speed.
Warning signs may indicate a steep ascent or dangerous descent and may show the gradient as a percentage. Drivers should adjust their speed early, select a suitable gear and remain prepared for slow vehicles, curves and changing road conditions.
What does a steep-slope warning mean in Canada?
A steep-slope warning calls for careful speed and gear control. British Columbia’s official driving guide advises drivers to remain in gear when descending so they can control the vehicle. Choose a suitable gear and speed for the slope, load and conditions; other provinces and territories have their own rules.
🔗 icbc.com • ICBC, Learn to Drive Smart full current guide
🔗 bclaws.gov.bc.ca • British Columbia, current Motor Vehicle Act
Warning for a steep descent.
English • Québec D-230-1 family • Steep descent. A steep downhill section is ahead. Control your speed before descending. The illustration shows a placeholder percentage, so no actual gradient can be read from it. The sign family is confirmed; some details of this illustration were not fully matched to the reviewed standard.
Sources
🔗 Commons.wikimedia.org
🔗 Cdn-contenu.quebec.ca • Québec MTMD · Danger signs poster, April 2026, p. 1
SVG source: Transports Québec • Public domain • Original revision 2013-08-11. Wikimedia original unmodified.
How should I approach a steep descent in Canada?
Reduce speed before the descent and select a suitable gear to help control the vehicle. Keep enough following distance and avoid building up speed that requires continuous heavy braking. A warning gives no fixed safe descent speed: the gradient, surface, visibility, load and vehicle can require a speed well below the legal maximum.
What should I check when meeting or overtaking on a slope in Canada?
Ontario’s handbook advises against passing near a hilltop where the view of oncoming traffic is restricted. Apply the province’s rules and any local priority controls; an Ontario example does not establish one mountain-road rule for all Canada.
🔗 ontario.ca • Ontario MTO — lane changes and restricted-visibility passing
