Arizona Oversize Load Signs, Flags And Lights

When And Where Must Arizona Signs Be Displayed?

R17-6-303 requires OVERSIZE LOAD at 9 feet or more width. The front sign goes on the power unit’s front or roof, and the rear sign on the load or loaded vehicle. Signs must be level side-to-side, readable normally and visible to approaching traffic. Illustration 2 specifies the sign construction; do not treat lettering alone as the entire specification.

At the exact threshold, 9 feet is included. A checklist written as “over 9 feet” would miss that boundary. Record the measured total loaded width rather than using a shipper’s nominal equipment width that omits attached parts.

How Do Arizona Flags Differ From The Banner Trigger?

R17-6-302 specifies cloth or plastic warning flags at least 18 inches square, in red or fluorescent orange. Its display rule refers drivers to Illustration 1 for the vehicle/load configuration.

Use that drawing with the actual load outline. For asymmetric freight, identify the side that projects and the outer ends of the projecting portion. Do not move the marker inward simply because a trailer-mounted bracket is more convenient.

When Do Nighttime Projection Lights Need Review?

R17-6-304 addresses nighttime safety lighting for a load projecting more than 4 inches beyond overall vehicle width or more than 4 feet in front or rear overhang, using Illustration 4 and the projecting-load provisions. Other applicable vehicle lighting requirements remain in place.

Draw the projection from the correct vehicle reference point before comparing the threshold. Distinguish an overhang lamp layout from a rotating amber warning beacon; they serve different visibility purposes and one is not automatically a substitute for the other.

What Belongs On The Arizona Pilot Car Checklist?

R17-6-305 separately requires an above-roof OVERSIZE LOAD sign, flags on each side of that sign, continuous warning-light/headlight use while escorting, and concealment when not in use.

Before dispatch, ask the escort operator to review the escort illustration rather than sending a photograph of the truck’s banner as the specification. Check that the sign mount does not hide warning lamps from traffic behind the car. Review both vehicles again when the load configuration changes.

How Can RouteAll Help With This Movement?

Review the Arizona permit in RouteAll after confirming the actual loaded dimensions. Match extracted roads to the original permit and discuss the same configuration with the escort. RouteAll does not measure the load, select a construction drawing or certify that its flags and lamps meet the rule. Get RouteAll For Permit Route Review.

Before You Roll

Record width at its widest point, compare all projections with the applicable drawings and verify both truck and pilot mounts. Plan concealment of signs when required. Stop the departure review if the drawing, installed equipment and permit do not describe the same configuration.