|NJT Comet IB cab car in the Haddonfield Trench|
|Modified A86 signal with no High Green lamp.|
|Modified A72 signal with no High or Bottom Green lamps|
Now because the signals are approach lit I couldn't verify what exactly NJT was up to here. Were they giving an Advance Approach on A86 followed by an Approach on A72 to make sure that trains couldn't accidentally go more than 30mph around a curve and through a trench that was likely good for 60mph? Given the removal of the Approach Medium option at A72 that seemed to be the most likely case until I paid a visit to SOUTH RACE and observed this.
The southward signal at SOUTH RACE had also lost its Green lamp and was now displaying Advance Approach as its least restrictive indication. So either an overspeed on southbound trains is less risky than an overspeed on northbound trains going around the same curve, or the A72 signal was also modified to display Advance Approach, despite Approach Medium getting the same 45mph ATC enforcement.
I would have been fine with the A72 being pegged at Approach Medium and the northward signals at SOUTH RACE being pegged at Approach because both alterations are clearly temporary and provide adequate mitigation against a very unlikely situation. What NJT decided to do instead took time, effort and appears to be permanent. This is exactly the sort of problem that PTC is inviting, safety margins being stacked on top of eachother. The overturn speed is 60, but other factors cause the PSR to be set at 30, ACSES will enforce the 30 with conservative braking curves, then cab signal drops will extend the restriction even further (2 miles) away from the curve. Then people wonder why nobody rides public transportation.