guide rail

English

Noun

guide rail (plural guide rails)

1. Synonym of guardrail
2. Synonym of check rail.
   • 2023 November 29, Paul Clifton, “West is best in the Highlands”, in RAIL, number 997, page 44:

     There are 11 tunnels on the branch. The longest is 350 metres. There's an additional guide rail on the sharper bends.