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Islip, NY Parking Rules: Commercial & Oversized Vehicles (2026)

Heavy Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified June 2026

Key Facts

Town Code Section
Islip Traffic Code Ch. TC5, Sec. TC5-1, TC5-2, TC5-3
Overnight commercial ban
9:00 p.m. to 6:00 a.m. on all town roads (Sec. TC5-2)
Overnight fine
Up to $250 and/or up to 15 days (Sec. TC5-2)
Weight exclusion
Over 5,000 lbs gross excluded from Schedule M streets (Sec. TC5-1A)
State authority
NY VAT Sec. 1660(a)(17)

Summary

Commercial vehicles, tractor-trailers, buses and advertising vehicles are banned from parking on any Islip town road between 9:00 p.m. and 6:00 a.m. (Sec. TC5-2), and it is unlawful to park a commercial vehicle on a public roadway at all except while actively loading/unloading or working on a property (Sec. TC5-3); trucks over 5,000 pounds are excluded from streets listed in Schedule M (Sec. TC5-1).

17. Exclude trucks, commercial vehicles, tractors, tractor-trailer combinations, tractor-semitrailer combinations, or tractor-trailer-semitrailer combinations from highways specified by such town board. Such exclusion shall not be construed to prevent the delivery or pickup of merchandise or other property along the highways from which such vehicles and combinations are otherwise excluded.

Source: Town of Islip Zoning Code 68View official code

Full Breakdown

Chapter TC5 of the Islip Traffic Code regulates commercial vehicles. Section TC5-1A excludes all trucks, commercial vehicles, tractors and tractor-trailer combinations over 5,000 pounds maximum gross weight from the streets in Schedule M; pickup trucks, school buses and recreational vehicles are exempt (Sec. TC5-1A(1)). m. Section TC5-3 (added 6-11-2002) makes it unlawful to park a commercial vehicle on any public roadway except while actively engaged in loading/unloading passengers or merchandise or while actively working on a property in the Town; emergency, municipal and public-utility vehicles engaged in street or utility work are excepted.

A 'commercial vehicle' includes every trailer and semi-trailer, vehicles designed for more than 10 passengers or used to transport persons for compensation, and trucks over two tons GVW. The Town's exclusion authority derives from NY VAT Sec. 1660(a)(17), which lets a town exclude commercial vehicles and tractor-trailer combinations from specified highways.

Violations & Fines

Violating the Sec. TC5-2 overnight commercial ban is punishable by a fine of not more than $250 or imprisonment for not more than 15 days, or both. Section TC5-3 and the Schedule M weight exclusions are enforced through the Parking Violations Bureau and code enforcement, with towing available under Chapter TC6.

Frequently Asked Questions

Can I park my work van or box truck on an Islip street overnight?
No. Section TC5-2 prohibits all commercially registered vehicles, tractor-trailers, buses and advertising vehicles from parking on any town road between 9:00 p.m. and 6:00 a.m., with a fine up to $250.
Can a commercial vehicle stop on the street during the day?
Only while actively loading or unloading passengers or merchandise, or while actively working on a property in the Town. Section TC5-3 otherwise makes it unlawful to park a commercial vehicle on any public roadway.

Sources & Official References

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