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Although not all rail systems in all countries use axle counters for presence detection. In the US freight industry we use track circuits - https://en.wikipedi
by andyv133 10y ago
Although not all rail systems in all countries use axle counters for presence detection. In the US freight industry we use track circuits - https://en.wikipedia.org/wiki/Track_circuit https://en.wikipedia.org/wiki/Track_circuit
- Symbiote 10y agoThat's not a replacement, that's the older technology. Axle counting guarantees that there isn't a detached, derailed wagon fouling the line, or a wagon with dirty wheels which aren't completing the track circuit.
- andyv133 10y agoNonetheless, it is what is used on freight lines in the U.S quite successfully, and provides other protections such as broken rail detection. Detached cars are detected using the FRED/braking system, and secondarily by axle counts given by hot box detectors read over the radio.