Brian,
Same era, a Qantas Lanc. or Liberator actually hit a train close to what is no the Qantas Catering Centre, can anybody remember the details, or dig them up.
As I remember, it was one of the aircraft used to carry spare Connie engines around the world.
Into the early '70's there were traffic lights, operated from the tower, on the road that ran along the west side of Biggin Hill, UK, the ends of several runways were VERY close to the road.
Tootle pip!!