one of a pair of half-length barriers or booms that end up blocking the entire road such as on a level crossing
one of a pair of half-length barriers or booms that end up blocking the entire road such as on a level crossing
one of a pair of half-length barriers or booms that end up blocking the entire road such as on a level crossing
one of a pair of half-length barriers or booms that end up blocking the entire road such as on a level crossing
one of a pair of half-length barriers or booms that end up blocking the entire road such as on a level crossing