Warning equipment in New York
Building-specific warning signs, lamps, and reflective markings, including roof-width measurement and alternatives to rear escorts.
8 facts, each with the passage it comes from, quoted from 2 official sources.

Where to apply
Where an application for Warning equipment is submitted in New York.
Mail · New York State Department of Transportation Central Permit Office
Mail In
Central Permit Office 50 Wolf Road, 1st Floor Albany, New York 12232
In person · New York State Department of Transportation Central Permit Office
Central Permit Office Walk In
Central Permit Office 50 Wolf Road, 1st Floor Albany, New York 12232
Fax · New York State Department of Transportation
Permit Unit, NYSDOT
(518) 457-0367
Use it when: Mobile homes and modular building units greater than 14 feet but not greater than 16 feet in width
Notice of any accident must be given within 10 days and include a copy of the police report.
Mail · New York State Department of Transportation
Permit Unit, NYSDOT
Permit Unit, NYSDOT, 1220 Washington Avenue, Building 5, Room 311, State Office Campus, Albany, New York 12232
Use it when: Mobile homes and modular building units greater than 14 feet but not greater than 16 feet in width
Notice of any accident must be given within 10 days and include a copy of the police report.
Start with a question
Open a question to read the facts on file that bear on it.
Facts
5 topics
Roof included in width for night restrictions (Yes or no)
Whether a prefabricated building's roof is included when measuring width for night-travel restrictions.
Yes
Night moves of overwidth loads
Warning lights replace rear escort conditions (In words)
Conditions under which warning lights may replace a rear escort for a prefabricated building on a divided highway.
The use of a certified escort vehicle in the rear in lieu of a warning sign may be required if the use of such vehicle would provide more effective warning or would be more convenient to the permittee.
Minimum warning sign height above ground (Measures)
Minimum required height above the ground of the warning sign attached to the rear of a mobile home or modular building unit, measured in metres.
- 5′1.52 mMobile homes and modular building units greater than 14 feet in width
- 5′1.52 mMobile/modular units greater than 14 feet in width
Minimum warning lamp height above ground (Measures)
Minimum required height above the ground of the flashing or revolving warning lamp attached to each side of each rear corner of a mobile home or modular building unit, measured in metres.
- 5′1.52 mMobile homes and modular building units greater than 14 feet in width
- 5′1.52 mMobile/modular units greater than 14 feet in width
Minimum retroreflective strip width (Measures)
Minimum required width of the prismatic lens retroreflective material strip on each side of each corner of a mobile home or modular building unit, measured in metres.
- 1′0.31 mMobile homes and modular building units greater than 14 feet in width
- 1′0.3 mMobile/modular units greater than 14 feet in width
Where these facts come from
- Subpart 154-1 — Nondivisible Load Permits; Table of Fees (Perm 43)(opens in a new tab)
www.dot.ny.gov, PDF, 5 facts
- New York State Certified Escort Manual 2025(opens in a new tab)
www.dot.ny.gov, PDF, 3 facts