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When UK crossings have a telephone warning system, the rail track will get a stop signal until the road vehicle is clear. Hence the need for the second phone call when the crossing is clear again.
– alephzero
Commented May 12, 2019 at 20:31
Naturally most of the commonwealth has inherited a similar requirement for busses to stop at railway lines.
– Criggie
Commented May 14, 2019 at 14:00
@Criggie I've never heard of that in Australia.
– CJ Dennis
Commented May 15, 2019 at 3:06
1

@Criggie That is not a British requirement. So it's not a Commonwealth thing. It is a US thing. In UK rail all level crossings are gated and controlled by signals - that is not true in the US
– mmmmmm
Commented May 15, 2019 at 20:40

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