WD-173
This is a warning sign for “Pilot Vehicle Do Not Pass.” Warning signs give you advance notice of a hazard or change in conditions ahead, so slow down and be ready to respond.
Warning signs alert you to hazards or changing conditions ahead.
Slow down and stay alert. A warning sign tells you a hazard or change in the road is coming, so be ready to brake, change position, or yield as needed.
Warning signs are usually yellow diamonds with black symbols. In construction or maintenance zones they are orange instead of yellow.
Sign image courtesy of the Government of Alberta, used under the Open Government Licence – Alberta. Pass Your Learner's is not affiliated with the Government of Alberta.
