Definition of home signal in English:

home signal

noun

British
  • A railway signal controlling entry to the immediate section of the line.

    • ‘The unit is a red marker light that identifies this signal as a home signal.’
    • ‘We continue around the curve, passing under the signal gantry housing two home signals, before we clack through the crossover, and across the Prospect Hill Road level crossing, where buses cross the line.’