The force also pushes the entire train sideways, leading to wear of the outer rail.

But somehow he was not clear of the outer rail.

I hop across the outer live rail to haul myself quickly on to the southbound platform.

A proposal to take up the outer rail was examined and it was decided that greater economy of operation would be achieved.

To test it, Margo went to the outer rail, only to find that the sea spray made it difficult to tell.

On curves the outer rail may be at a higher level than the inner rail.

She climbed over the outer rail and jumped into the river 30 feet below.

He knew a moment of doubt when he paused on the bottom step, one hand on the outer rail.

Generally, there are two of these for each frog, one by each outer rail.

They were also made in different sizes, or gauges, which corresponded to the distance between the outer rails.