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Having spoken to a friend who does traffic for a city, traffic light controllers are generally (always?) hard-wired to prevent an all green-type situation, but
by DougN7 2y ago
Having spoken to a friend who does traffic for a city, traffic light controllers are generally (always?) hard-wired to prevent an all green-type situation, but they have other weaknesses which I won’t go into.
- kjkjadksj 2y agoAll the stuff is super physically unsecured too. You see people routinely popping the plate off telephone poles and illegally tapping into the powerlines. If someone knew what they were doing they could probably hook into the lines that control signal timing and do whatever. Throw on a high vis vest and people will think you are supposed to be doing whatever you are doing.
- capitainenemo 2y agoI did work on those for a while many years ago. I don't know if things have changed but many signal controllers had the ability to disable the conflict monitor without going into flash which could be helpful when working on them, but could certainly be abused. And yeah. cabinets are often left unlocked.
- anticensor 2y agoLet me guess: they are surprisingly easy to force them into all reds.