New York Codes, Rules and Regulations
Title 9 - EXECUTIVE DEPARTMENT
Subtitle I - Office of Parks, Recreation and Historic Preservation
Chapter I - Parks
Subchapter J - Tenth Park Region
Part 416 - Thousand Islands State Park, Recreation And Historic Preservation Commission
Section 416.4 - Vehicle speed limits

(a) A rate of speed by a motor vehicle in excess of 25 miles per hour is prohibited, except where specifically permitted by signs or as stated in subdivision (b) of this section.

(b) On Barnhart Island, Robert Moses State Park, the Island Road, Long Sault Road and Massena Point Road and other roads connecting with park facilities a rate of speed in excess of 40 miles per hour is prohibited.

(c) A rate of speed by motor vehicles in excess of 15 miles per hour is prohibited on campsite driveways or parking fields.