At or near the rear - 1 red or amber on each side of the vertical centerline, at the same height and having a minimum horizontal separation distance (centerline to centerline of lamps) of
230 mm (9 inches). Minimum edge to edge separation distance between lamp and tail or stop lamp is 100 mm (4 inches), when a single stop and tail lamp is installed on the vertical centerline and the turn signal lamps are red.
http://www.tc.gc.ca/eng/roadsafety/safevehicles-mvstm_tsd-tsd-1080rev5_e-1231.htm#Table III
Bookmarks