Rail inspections early Saturday mean buses and vans will replace trains on the Port Washington Branch, the Long Island Rail Road said.
From 1 a.m. to 5:30 a.m., customers riding between Great Neck and Port Washington will be accommodated by buses or vans, the commuter service said.
Customers on two eastbound and two westbound trains will be affected and should allow additional travel time.
Eastbound travelers to Manhasset, Plandome and Port Washington will board a bus or van at Great Neck for transportation to their destination. Additional travel time is likely to be about 27 minutes, the LIRR said.
Westbound travelers who normally board trains at Port Washington, Plandome and Manhasset between 2:10 a.m. and 4:17 a.m. will instead take buses or vans to Great Neck for connections. Additional travel time is likely to be 31 minutes.
The scheduled track inspections will be made by the Sperry Rail Car, a bright yellow vehicle fitted with ultrasonic and induction test equipment.
The inspections are designed to identify internal rail defects not readily visible to the eye.
Track maintenance workers can immediately correct defects, if any should be discovered. The Sperry Rail Car is used twice a year to inspect 500 miles of track, the LIRR said.
Customers can get more information at mta.info or by calling 511, the New York State Travel Information line, and saying: Long Island Rail Road.