Minnesota Oversize Load Signs, Flags And Lights

When Does The Minnesota General-Provisions PDF Call For Signs?

The posted PDF requires front and rear Oversize Load signs when width exceeds 12 feet 6 inches or length exceeds 95 feet. It says signs must be lighted or reflective between sunset and sunrise and visible at least 500 feet. It does not establish a banner size in that warning-device paragraph.

Use that distinction when dispatch prepares a purchase list. Do not fill an omitted measurement with a neighboring state’s size and label it a Minnesota requirement. Ask MnDOT to resolve any dimension or material requirement left unclear by the current attachment.

Why Can A Load Need Flags Before It Needs Signs?

The same paragraph specifies 18-inch red or orange flags at the widest ends when width exceeds 9 feet or length exceeds 75 feet. It also calls for warning flags or lights spaced no more than 20 feet apart along a vehicle or load exceeding 75 feet long.

For a long but relatively narrow piece of equipment, review the side view as well as the front and rear. An end-only equipment count may miss the intermediate marking question. Mark the proposed positions on the trip sketch and resolve unclear sections before the truck leaves the loading site.

Which Lighting And Special-Configuration Questions Remain?

Warning lights are required whenever the PDF requires signs; flashing, strobe or rotating equipment must be visible from at least 500 feet. MnDOT’s resources page also links a light/flag chart for specialized long-load configurations. That chart’s current download was intermittently rejected during review.

A schnable or dolly arrangement deserves its own check against the current chart and permit. Do not infer its complete lighting layout from a general tractor-and-semitrailer example. Keep unresolved equipment questions separate from the route survey and escort-qualification checks.

What About The Pilot Car And A Border Handoff?

Minnesota maintains a separate pilot-car requirements resource. The hauling-unit warning-device paragraph does not establish every escort equipment detail. Ask each escort to confirm its applicable setup independently.

At a border or crew change, share the actual Minnesota attachment rather than a remembered threshold. The operational question is whether the arriving combination and crew match the current document, not whether the preceding state accepted the same truck earlier that morning.

How Can RouteAll Help Prepare This State Leg?

Import the issued Minnesota permit into RouteAll, review the extracted roads against the document and share the reviewed route with the crew. Use the permit packet to check marking conditions separately. RouteAll does not inspect warning equipment or certify compliance; a route shown in the app does not approve signs, flags or lamps.

Before You Roll

Compare width and length against each warning-device trigger separately, then obtain the current permit attachment and any configuration-specific chart the movement requires.