rbt
Senior Member
A while back someone from the TTC communicated a major issues installing PRESTO at some stations was asbestos in the ceilings and walls where they planned to run the conduits to power the terminals. Asbestos required specially trained workers to remove, and it takes a long time, especially if not closing the station.
Not a surprise in Canada there would be asbestos everywhere even in buildings from the 80's.
This is also the reason why platform next-train displays, additional security cameras, networking improvements, and even lighting upgrades in many cases were indefinitely deferred for some stations.
What might normally have been a couple nights work is suddenly a very long and expensive project.