Link to trucks (box trucks, tractor trailers), and commercial vehicles in New York City. (Please see previous post for distinction between trucks and commercial vehicles in NYC). Single unit (i.e box trucks) and multi unit vehicles (tractor trailers) exceeding the dimensions listed below must obtain a daily permit for over dimensional vehicles. According to the NYC DOT site:
Tractor-trailer vehicle combinations not exceeding 13′6″ in height, 8′ in width, and 55′ in length can travel on interstates and truck routes. The maximum allowed length of single unit vehicles, such as boxtrucks, is 35′.
The maximum weight for vehicles in NYC is 80,000 lbs. Please see NYC DOT Size and Weight Restrictions page for trucks for more information. It also has information on the Local and Through Truck Routes, where to apply for a daily permit for over dimensional vehicles and more.