A controlled railway crossing may have
- a stop sign.
- a flag person.
- an electrical or mechanical signalling device.
- any of the above. ✓
Answer: D. any of the above.
A controlled railway crossing may have any of the above: a stop sign, a flag person, or an electrical or mechanical signalling device.
Why this is the answer
The handbook defines a controlled railway crossing as one that has a flag person, stop sign, crossing gate, or an electric or mechanical signalling device. It also says vehicles must stop at controlled crossings when signalled. Because the listed features all fit that definition, the correct choice is the one that allows any of them.
Why the other answers are wrong
- A. a stop sign. — A stop sign is only one feature the handbook lists for a controlled crossing, so it does not cover the flag person or signalling device that may also be present.
- B. a flag person. — A flag person is only one feature the handbook lists for a controlled crossing, so it does not cover the stop sign or signalling device that may also be present.
- C. an electrical or mechanical signalling device. — An electrical or mechanical signalling device is only one feature the handbook lists for a controlled crossing, so it does not cover the stop sign or flag person that may also be present.
Remember it
Picture a controlled crossing as stop, person, gate, or signal: if any one is there, treat it as controlled.
Official handbook: ICBC Driving Commercial Vehicles, 3 Basic driving skills – Crossings, p. 53