RB-57
This is a regulatory sign that means “Part-Time Stopping Control (Specific Time Period).” Regulatory signs tell you what you must or must not do — you are legally required to obey them.
Regulatory signs control how you may use the road — they must be obeyed.
When you see this sign you must do what it says — regulatory signs are legal requirements, and ignoring them can mean a fine or demerit points. Slow down in time to obey it safely.
Regulatory signs are usually white rectangles or squares with black or red markings. A few have special shapes: a red octagon means Stop and a red-and-white downward triangle means Yield. A red circle with a slash means something is prohibited.
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.
