Idaho Pilot Car Requirements
When does an oversize or overweight load need a pilot car or escort in Idaho? Here are the width, height, length and weight thresholds that trigger an escort, a height pole, or a police escort.
Escort & pilot car requirements
- Police / law-enforcement escortover 18'0" width
NOT ESTABLISHED — no police-escort provision was found anywhere in IDAPA 39.03.01, and the route-specific claim (US-30, US-93, SH-75) has no primary source. Retained as a prompt to ask, not as a requirement: confirm with ITD Commercial Vehicle Services before relying on it either way.
- Height-pole escortover 16'0" height
Height pole required in front of the lead pilot/escort vehicle for loads over 16'0" high — IDAPA 39.03.01 sec. 306.02, verbatim: "Height poles are necessary in the front of the pilot/escort vehicles leading all loads over sixteen (16') feet high with a non-metallic height pole deployed." The pole must be non-conductive, non-destructive and flexible-tipped, mounted on the front of the escort vehicle (sec. 306.09.f). Raised from 15'6", which no source supports: the rule, uspilotcars and the publisher's own site all say 16'.
- Lead (front) pilot carover 105'0" length
Length trigger NOT ESTABLISHED. IDAPA 39.03.01 sec. 306 requires pilot/escort vehicles but defers the numeric length threshold to the Pilot/Escort Vehicle Travel and Vertical Clearance of Structures Map, which is not publicly retrievable. The 105' figure has no primary source — read the escort condition printed on the permit.
- Chase (rear) pilot carover 14'0" width
A rear escort is provided for by IDAPA 39.03.01 sec. 306.12 (citing Idaho Code sec. 49-940), but the numeric width trigger is NOT ESTABLISHED — the rule defers it to the Pilot/Escort Vehicle Travel and Vertical Clearance of Structures Map. The 14' figure has no primary source; confirm on the permit.
- Lead (front) pilot carover 12'0" width
Pilot/escort vehicles are required by IDAPA 39.03.01 sec. 306, but the numeric width trigger is NOT ESTABLISHED — the rule defers it to the Pilot/Escort Vehicle Travel and Vertical Clearance of Structures Map, which is not publicly retrievable. The 12' figure has no primary source; read the escort condition printed on the permit.
Travel restrictions
- Daylight-only travelover 14'0" width
Time of travel is set by IDAPA 39.03.01 sec. 305 and is route-coded, not a flat width rule. BLACK-coded and Interstate routes: a load not over 12' wide, 120' long and 15' high may travel 24/7; anything exceeding one of those follows the Pilot/Escort Vehicle Travel Map. RED-coded routes: daylight travel only, ending 2:00 p.m. Friday or the day before a holiday, no travel Saturday or Sunday, resuming sunrise Monday or the day after the holiday.
- Weekend / holiday restrictionover 14'0" width
Holiday and weekend windows are set by IDAPA 39.03.01 sec. 305. RED-coded routes: no Saturday or Sunday travel; daylight only until 2:00 p.m. on the Friday or day preceding a designated holiday, resuming sunrise the day after. BLACK-coded routes: loads exceeding the 12' wide / 120' long / 15' high envelope must stop by 4:00 p.m. the day preceding a holiday. Designated holidays include New Year's Day, Memorial Day, Independence Day and Labor Day.
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Informational only. These thresholds are compiled from published Idaho DOT references and are not legal or operational advice. Permit conditions can differ from the general tables, and rules change — always verify with the Idaho permit office before you move a load.
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