Rangers at a Dune Checkpoint
Rangers at a California dune checkpoint may check permits, OHV identification and safety gear; keep documents matched, current and easy to show.
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Flags Within 10 Inches of the Mast Top
California dune safety flags must sit within 10 inches of the whip mast top; secure the mount, keep it visible, and inspect before riding.
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Why Dune Flags Measure 6 by 12 Inches
California dune flags must be at least 6 by 12 inches, solid red or orange, and mounted on an 8-foot whip; check placement before riding.
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Whip Mast Height on the Sand
California’s dune whip rule requires a securely mounted mast and flag extending at least eight feet from the ground; measure the installed setup before riding.
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What Happens Without a Dune Permit
Without a dune permit at California’s Imperial Sand Dunes, you risk a citation or trip interruption; check every vehicle’s permit and display before entering.
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Does the Truck That Towed You Need a Permit?
A truck towing an ATV or UTV does not need its OHV permit, but California SVRAs may charge a separate vehicle entrance fee.
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Displaying a Permit on the Windscreen
Displaying an ISDRA permit on the windscreen means placing it as instructed on the associated vehicle, while keeping OHV registration and proof separate.
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When the Dune Season Permit Beats Buying Weekly
When the Dune Season Permit Beats Buying Weekly explains the Imperial Sand Dunes cost crossover, permit choices, and registration checks.
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Permit Season From October to April
California’s Imperial Sand Dunes permit season runs October 1 through April 15; confirm the right permit and display it before riding.
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On-Site Versus Off-Site Weekly Permits
Imperial Sand Dunes weekly permits bought on-site or off-site differ in cost, convenience, availability, and display rules.
