ION - Waterloo Region's Light Rail Transit

[trainspotter139]

It is a mode where the crossing only activates when a vehicle enters the crossing island (the space that covers the width of the crossing) rather than by using its track circuits to gauge approach timing.

Thanks, that makes sense. So I assume they would have to creep up to the intersection until the protection triggers, wait for it to be fully enabled, and then enter the crossing?

Given that, why would police be needed? Whenever a vehicle is in the crossing won’t the arms be down?

because during testing the crossings may act funny.