Motor vehicles shall be operated only on roads and in parking areas constructed for motor vehicle use. Trail bikes, motorcycles, jeeps, pickups and other passenger carrying motor vehicles shall not be operated on any road or trail posted as closed to the public or to such use.
Cal. Code Regs. Tit. 14, § 1431
Note: Authority cited: Section 4656.1, Public Resources Code. Reference: Sections 4656.1 and 4656.2, Public Resources Code.