Specifications
As arterial roads are designed for unimpeded high-speed movement, traffic signals are used at most intersections (except where the intersecting road is a minor side street, in which case a stop sign is used instead). Speed limits are typically between 30 and 50 mph (50 and 80 km/h), depending on the density of use of the surrounding development. In school zones, speeds may be further reduced; likewise, in sparsely developed or rural areas, speeds may be increased.
The width of arterial roads can range from four lanes to ten or more. Some are divided at the center, while others share a common center lane, such as a contraflow lane or central turning lane.
Read more about this topic: Arterial Road