Single switch distance

[FRN9]

Does anyone know How much track length (in feet) is needed for a single switch from one line to another (vs. a double switch between both lines)?

Thanks

F

[DaveBarraza]

Turnout Length depends on sharpness. Say, 150-200 feet on average from the point-of-switch to the point where the divergent track becomes tangent again.

[FRN9]

Turnout Length depends on sharpness. Say, 150-200 feet on average from the point-of-switch to the point where the divergent track becomes tangent again.

What would be the shortest distance possible with imaging an Island platform width between the tracks (so right before the stop)?

Thanks,
f

[jlr3266]

My alignment engineers tell me they would need the track speed, platform length, RR standards, breaking distance for the equipment, grades, and a charge number. It's not that easy.

[DaveBarraza]

On the IRT the frog numbers generally went down as low as #5, but this requires 10mph operation.

IND installed #8's and longer.

[FRN9]

On the IRT the frog numbers generally went down as low as #5, but this requires 10mph operation.

IND installed #8's and longer.

I feel so ignorant. What do you mean by frog numbers? #8s?

[jlr3266]

The numbers designate the size, or length of the switch. The lower numbers are tighter than a #20 or greater "high speed" switch. The effective curve created by a #5 crossover can fit in tight spots, but the trains must run very slowly. This really can affect operations on normal moves.