Cal. Code Regs. tit. 14, § 4609
(a) All vehicles may be operated only as follows:
(3) All Off-Highway vehicles registered under California Vehicle Code Section 38010 or other vehicles primarily operated for Off-Highway Vehicle activities shall be equipped with a whip, which is any pole, rod or antenna, that is securely mounted on the vehicle and which extends at least eight (8) feet from the surface of the ground when the vehicle is stopped.
When the vehicle is stopped, the whip shall be capable of standing upright when supporting the weight of any attached flags.
At least one whip attached to each vehicle shall have a solid red or orange colored safety flag with a minimum size of six (6) inches by twelve (12) inches and be attached within ten (10) inches of the top of the whip. Flags may be of pennant, triangle, square, or rectangular shape. Club or other flags may be mounted below the safety flag or on a second whip.
(4) When a vehicle is operated in the dunes area, which is that land area extending from the first line of sand dunes inland outside Pismo Dunes Natural Preserve, the vehicle shall have additional equipment as follows:
Note: Authority cited: Section 5003 and 5008, Public Resources Code. Reference: Sections 5003, 5008, 5090.32(b), 5090.32(c) and 5090.35(a), Public Resources Code; and Sections 4000, 21113, 38010 and 38316, Vehicle Code.
1. Amendment filed 1-28-86; effective thirtieth day thereafter (Register 86, No. 5).
2. Change without regulatory effect repealing first sentence, adding subsection (a) designator, and renumbering former section 4609.1 to new subsections (b)-(b)(4), with amendments, filed 6-18-96 pursuant to section 100, title 1, California Code of Regulations (Register 96, No. 25).
3. Amendment of section heading, section and Note filed 12-29-2009; operative 1-1-2010 pursuant to Government Code section 11343.4 (Register 2010, No. 1).