Vans will replace a handful of late-night trains this weekend on a stretch of the Oyster Bay branch of the Long Island Rail Road to allow for installation of safety equipment.
The railroad said it will be installing positive-train-control signals between Locust Valley and Oyster Bay.
Positive train control is meant to automatically stop a train when there is a danger, such as excessive speed.
On Saturday, the 1:46 a.m. and 11:47 p.m. trains from Jamaica will terminate at Locust Valley, while on Sunday, the 1:46 a.m. train from Jamaica will terminate at Locust Valley.
Riders will transfer to vans at Locust Valley for service to Oyster Bay and should plan for 14 minutes of additional travel time, according to the railroad.