Where can special dimension vehicles (e.g. 53-foot long trailersror STAA vehicle combinations such as twin 28-foot trailers, stinger-steered autocarriers, maxi-cubes, triple saddlemounts or total combination lengths greater than 65 feet) be driven?

 These vehicles may operate on the Designated Truck Access Highway System that includes the National Network (Qualifying Highways) and Access Highways. The New York State Departmetn of Transportation's web site provides a complete list of the valid routes as well as information about the access highway program.

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Access highway information
Link to a list of access highways and an explaination of what they are.
URL: https://www.nysdot.gov/portal/page/portal/about-nysdot/faq/special-dimension-vehicles