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Certain traffic lights in the UK have something like that. If you flash your lights (at night) as you approach they will change. It's sometimes used where a min
by tomsaffell 13y ago
Certain traffic lights in the UK have something like that. If you flash your lights (at night) as you approach they will change. It's sometimes used where a minor road crosses a major one. At night the lights are configured to stay green for the major road, until either: a) a vehicle is sensed waiting at the minor road's stop line; b) a flash of light detected from the direction of the minor road.
The crossing of the A60 into Rempstone is one such example.
- grkvlt 13y agoNo they don't and no it isn't.
- danielweber 13y agoLights in the US have buttons that you can press. But they don't always work. There's one light in Cambrige, MA, that, as far as I could tell, never ever said WALK.
- jrockway 13y agoThis traffic light is great: https://www.google.com/maps?ll=41.869753,-87.648017&spn=0.001953,0.00246&t=m&dg=opt&z=19&layer=c&cbll=41.869679,-87.648617&panoid=5yA75PQ0jYSwgoYHMvbzWQ&cbp=12,177.37,,0,5.41 https://www.google.com/maps?ll=41.869753,-87.648017&spn=... It turns red immediately when you press the button. When I was in college, I would entertain myself between classes by going over, pressing the button just as the upstream light turned green and cars began accelerating, and then not crossing the street. This, incidentally, is probably why most lights don't change immediately.
- AlonsoG 13y agoJust something curious while "walking around" ... https://www.google.com/maps?ll=41.869635,-87.648258&spn=0.001174,0.001725&t=m&dg=opt&layer=c&cbll=41.869699,-87.64849&panoid=7B-RhebYWazD30Y8EualbQ&cbp=12,129.92,,0,-27.8&z=19 https://www.google.com/maps?ll=41.869635,-87.648258&spn=... Banshee from Halo? Hint: cross side to side (following parent link) of street looking to sky
- carey 13y agoAlmost all lights here in Christchurch have buttons to request that the lights change, except for a few like https://www.google.com/maps?ll=-43.553027,172.663193&spn=0.293606,0.495758&cbp=12,300,,0,15&layer=c&panoid=GV-lWg1nShOaAwFIlgzYpA&cbll=-43.52332,172.62178&t=m&z=11 https://www.google.com/maps?ll=-43.553027,172.663193&spn... where the button does nothing, and you have to stand on the yellow pad until the lights change, or have a metal bike. Not everyone understands that you need to keep standing on the pad, or that the bike crossing doesn’t last long enough to walk all the way across.
- bmslieght 13y agoI am a traffic signal engineer. They don't. They may have a detector (ir-red/mircowave/inductive loop) that detects your approach. At night, as they may be no conflicting demands - the side road will change Green ASAP.
- paulbennett 13y agoDo they, or did they used to, have light sensors to detect emergency vehicles coming through? Perhaps that was just an urban myth.