The Stop sign indicates to drivers that they must stop their vehicles completely before entering the intersection area and must not proceed until it is safe to do so.  The Stop sign is octagonal in shape with a minimum horizontal and vertical dimension of 60cm.

Oversized Stop signs may be used where the physical characteristics, collision experience or traffic speeds indicate that a 60cm sign will not have sufficient impact.  

Reduced-size Stop sign may be used on separate bicycle facilities to regulate the movement of cyclists.  In this case, the minimum dimensions are 45cm.  Care should be taken to ensure that signs are placed on the bicycle facility so that they are not visible to drivers