automatic half-barrier level crossing

automatic half-barrier level crossing (plural automatic half-barrier level crossings)

1. (rail transport) A level crossing with a single barrier on each side of the railway line, the barriers when lowered only block half of the road.
   • 2020 January 2, “Safety procedures addressed after Essex level crossing near-miss”, in Rail, page 15:

     The incident occurred when the 1111 Fenchurch Street-Southend Central passed over Mucking automatic half-barrier level crossing (between East Tilbury and Stanford-le-Hope) just six seconds after a lorry partially loaded with concrete had reversed off the crossing. The train was travelling at 57mph at the time.

• AHB