Originally Posted by
diburning
When the requirement went into place, there were no off-the-shelf scalable PTC systems available to simply purchase, install, and use. Even as PTC is being installed now, it's a "lets put it in and see what happens" type of installation. But I do have to mention that without the requirement to install PTC, and without deadlines, it will never get done.
I'm curious about this—my understanding was that at least China (CTCS) and Japan (D-ATC) have had full implementations of PTC available since the mid 00s, which they've also sold and deployed in other countries.