California Oversize Load Signs, Flags And Lights

Which California Load Sign Should Be Used?

Caltrans’ FAQ calls for warning signs above 8 feet 6 inches width or 80 feet length. It specifies 10-inch letters, a 1⅝-inch stroke, a 1-inch margin, black on yellow, mounted at least 18 inches above the road. LONG LOAD is used above 100 feet overall; its preference remains when other oversize features exist.

Write overall loaded length on the trip sheet before ordering signs. A driver looking only at the trailer’s nominal length can choose the wrong message. Verify that the rear sign remains readable once a long load extends beyond the trailer.

Which Flag Size Applies To A Rear Projection?

The specific Caltrans Overhang page says a rear projection of 4 feet or more, measured from the taillamps, needs an 18-inch red or fluorescent orange flag, or two when the projecting load is wider than 2 feet. During darkness it describes two red lights visible 500 feet to the sides and rear.

The general FAQ still contains older 12-inch projection wording. Do not silently blend those pages into a smaller requirement. Resolve the current statute and permit with CHP/Caltrans if the configuration is uncertain; this guide follows the specific overhang page for this example.

Do Side Projections Need Their Own Markers?

The same Overhang page separately addresses covered vehicles carrying loads that extend more than 4 inches beyond the sides, referencing CVC 25104(b) and 18-inch flags.

Measure from the vehicle’s side as well as measuring overall freight width. A driver may remember the legal-width permit threshold but overlook a projection-marker trigger measured from a different reference. Document an irregular shape with a simple sketch for the crew.

Why Is The Pilot-Car Sign Not A Load Banner?

Caltrans’ FAQ describes a pilot sign at least 48 inches above ground with a 440-square-inch projected area, 6-inch lettering and a 1-inch minimum stroke. It also directs removal/covering of permit signs when operating without the load requiring the permit.

Treat the escort’s viewing angles and mount height as their own inspection. An oversized sign fastened too low can be less useful than a correctly mounted sign. Include the post-delivery removal step in the assignment handoff so warning equipment does not advertise a movement that has ended.

How Can RouteAll Help With This Movement?

Use RouteAll to review the permitted California roads and discuss the loaded configuration before departure. Keep overall length and projection measurements with the original permit. The app does not resolve conflicting agency flag pages, approve sign wording or certify that the load and pilot vehicles meet equipment rules. Get RouteAll For Permit Route Review.

Before You Roll

Record total length, side and rear projections, correct warning wording and separate pilot equipment. Resolve the flag-source discrepancy before relying on a smaller marker. Include removal or covering of warning signs when the permitted load is no longer being carried.