I know that was the cause. I'm lamenting that the rail system has been unable to deploy PTC because of the cost, which, as a nonprofessional, seems astronomica

I know that was the cause. I'm lamenting that the rail system has been unable to deploy PTC because of the cost, which, as a nonprofessional, seems astronomical for what should be a simple system. Remember, I was initially referring to rail's approach to safety generally, not just in the context of automation.