Physical obstructions and influence on traffic caused by the presence and use of access driveways to property along the highways make it necessary that they be controlled for the safe movement of normal highway traffic. This section describes the Department's criteria for the construction and maintenance of private, public, and commercial driveways. The purpose is to accomplish a coordinated development between the highway and the abutting property which it serves. It is essential that entrances or exits of adequate design be provided for abutting properties, especially commercial properties, in order that ingress and egress may be made as safe as possible to the traveling public, and to those who patronize the roadside commercial establishments.