Level crossings

Question 1

List automatic crossings?

Answer 1

AHBC - automatic half barrier crossing comes with track treadle 27 secs in advance.
ABCL - automatic barrier crossing locally monitored
AOCL - automatic open crossing locally monitored. Flashing lights and audible siren.
R / G - Crossing with red and green warning lights. Audible siren/ voice with lights and barriers.

Question 2

List controlled crossing?

Answer 2

MCB - manned crossing with barriers

MG - manned crossing with gates

Question 3

List remotely managed crossing?

Answer 3

RC - remotely controlled crossing with barriers
CCTV - barrier crossing with CCTV
OD - barrier crossing with obstacle detection. Low radar to detect obstacles protected by red lights.