Some think it can create capacity by allowing shortening of headways between trains since the controls would keep them apart. The costs though are tremendous and the freight lines want to spread that out to shippers. But since it would be imposed on freight routes carrying toxic inhalation cars, some want only the TIH freight to carry the cost. Since PTC will cost billions and TIH traffic is .75% of the RR mix, do the math and calculate the cost of a chlorine car going to your local water treatment plant.
Then each RR could use a different system, so compatability among them is challenged.
Since this is government mandated, but not funded, the transit authorities will be in a bind to come up something that won't break the bank.
Intention here was very good. Implementation not as simple. All due to one guy smoking pot and another on the phone instead of both being alert and fit for duty.
