Slip switches

Are there any slip switches in use on the subway like used on commuter railroads? Or do they just use very tight switches and crossovers?

Can you explain what a slip-switch is?

Hi,

You will normally find single or double slip switches only in a yard, where lots of switching and shifting is done. And, at slow speeds, well under 20 mph. Slip switches are strictly slow speed, and in congested yards. You can inspect/ see slip switches, usually double slip switches, from the platforms at Grand Central Station, or Penn Station.

Its a switch that allows switching in multi directions.

Yes we do in the IRT North of Grand Central (4/5/6) Lines and Atlantic Ave on the (2/3/4/5) Lines. In the BMT North of 9 AV ( D ) West End Line.

Just north of E180 on the White Plains Line there are a couple of slip switches.

Here is a pic.

http://photos.nerail.org/showpic/?20040 ... lip+switch

Hi All,

Excellent photo of a double slip switch. As you can see, the switch will allow a train to "slip" to either side from both directions. By contrast, a single slip switch will allow a train to "slip" from only one direction. From the other direction it is a crossing.

Ave X has a double slip
Chambers-BMT has a single slip

SIRT has a double slip with Moveable-Point-Frog at St. George

Hi All,

The typical Engineer or motorman does not differentiate between a single slip switch or a double slip switch. To them they are all Puzzle Switches.

One more: Single slip S/O 42nd/7th on the IRT