Truck declared it was crossing. ATC told it to stop. Truck didn't stop.
This wasn't a communication issue.
They do at CYYZ (Toronto Pearson):
* https://www.flightradar24.com/43.68,-79.63/13 (zoomed in)
* https://www.flightradar24.com/airport/yyz
Also at CYUL (Montreal Trudeau) and CYVR (Vancouver International).
The only negative I can think of is that it will generally involve accepting and responding to clearances on short final. I think adding more tasks to that critical stage of flight probably increases danger a little. Especially for low time student pilots like myself. That's particularly relevant in the U.S. because we have a higher percentage of student and private pilots than most of the world.
Overall, though, I'm fully convinced this would be safer.
Us lot have more people doing SRE ensuring p99 10ms for something frankly way less important. It is a nuts world.
I'd bet a lot of money that however the system is implemented the police and fire get special treatment when it comes to process (i.e. asking permission before they go somewhere planes might be) and that is part of what lead to this.
I highly doubt that any system would intentionally give ground vehicles of any kind special treatment on an active runway.