Type I or Type II barricades are intended for use in situations where traffic is maintained through the area being constructed and or reconstructed. They may be used singly or in groups to mark a specific hazard or they may be used in a series for channelizing traffic. Type I barricades normally would be used on conventional roads or urban streets and parking areas. Type II barricades are intended for use on expressways, freeways and other high-speed roadways and shall have a minimum of 270 square inches of reflective area facing traffic.

In construction areas Type III barricades shall be erected at the points of closure. They may extend completely across a roadway from curb to curb. Where provisions must be made for access of equipment and authorized vehicles, Type III barricades should be movable. 4' folding barricades can be used to hold signs and to provide maximum portabilty.