Permissive signs
Permission signs are a green circle on a white square. The action within the green circle is permitted.
Turn left only 
Turn right only 
Straight only 
Dangerous goods (permitted) 
Motorized snow vehicles (permitted) 
Trucks (permitted) 
Bicycles (permitted) 
Passing permitted
Prohibitive signs
The symbol prohibiting an action is a red circle and diagonal red bar on a white square. The action within the red circle is not permitted.
No left turn 
No right turn 
Do not pass 
No U-turn 
Do not pass bicycles