Arterial road

In California, arterial roads are usually spaced every half mile, and have intersecting collector(s) and streets.

Both classes serve to carry longer-distance flows between important centers of activity.

Because of the placement and general continuity of arterial road corridors, sewers, water mains, conduits and other infrastructure are placed beneath or beside the roadbed.

In western Canada, where highways are scarce compared to the rest of North America, flashing early-warning amber lights are sometimes placed ahead of traffic lights on heavy signalized arterial roads so the speed limits can be raised to speeds of over 80 km/h.

These warning lights are commonly found on high-speed arterial roads in British Columbia.