What's funny in certain countries (right now for me the GCC) is that people believe if you flash with your brights at the right speed and frequency it will automatically set them to green, or shorten the interval on the opposing traffic direction so it goes green for you sooner. Do other people believe this? I have watched people try for over 60 seconds or more until giving up, and I find this hilarious even today.
Ambulances will trigger green signal
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Re: Ambulances will trigger green signal
#12What's funny in certain countries (right now for me the GCC) is that people believe if you flash with your brights at the right speed and frequency it will automatically set them to green, or shorten the interval on the opposing traffic direction so it goes green for you sooner. Do other people believe this? I have watched people try for over 60 seconds or more until giving up, and I find this hilarious even today.
This works for temporary traffic lights here in the UK (I've just googled and some people seem to think they are motion sensors, but from my experience they aren't)
If it's dark and quiet, I think both sides go to red, then when a light is detected, that side goes green. Quite common knowledge in the UK
Re: Ambulances will trigger green signal
#13A similar system is already in effect (for years) in my area of the US.
has it been hacked?
Re: Ambulances will trigger green signal
#14Great idea! I think it worth to be implemented everywhere.
I wonder how secure it is and what the black market is like for a device that changes the lights for you....
Re: Ambulances will trigger green signal
#15Why doesn't the signal set all lights to red, leaving the junction clear for the ambulance to go through?
The best reason I can think of is if the idea is to improve traffic flow in general in favour of the ambulance (e.g. allow cars in front of the ambulance to move on through the lights), but that quicklt becomes a much more complex problem.
Re: Ambulances will trigger green signal
#16Why doesn't the signal set all lights to red, leaving the junction clear for the ambulance to go through? The best reason I can think of is if the idea is to improve traffic flow in general in favour of the ambulance (e.g. allow cars in front of the ambulance to move on through the lights), but that quicklt becomes a much more complex problem.
One answer would be green lights indicate that it's red in the crossing direction, since the ambulance driver can't see those lights.
Re: Ambulances will trigger green signal
#17The traffic lights in Sydney are managed in a way to give priority to late-running public transport.
I was impressed to find out the traffic light system in Sydney, Australia (Sydney Coordinated Adaptive Traffic System - http://en.wikipedia.org/wiki/Sydney_Coordinated_Adaptive_Tra...) has been exported around the world to cities such as Singapore, Dublin and Hong Kong.
Interestingly enough,
Re: Ambulances will trigger green signal
#18As far as I know in the Netherlands you get aside or stop when you see the strobe and hear the siren, to let an emergency vehicle pass, it is also allowed to run a red light.
Re: Ambulances will trigger green signal
#19A similar system is already in effect (for years) in my area of the US.
has it been hacked?
Indeed it has been hacked. All things have been hacked. http://www.textfiles.com/phreak/BOXES/box-chro.txt
Re: Ambulances will trigger green signal
#20What's funny in certain countries (right now for me the GCC) is that people believe if you flash with your brights at the right speed and frequency it will automatically set them to green, or shorten the interval on the opposing traffic direction so it goes green for you sooner. Do other people believe this? I have watched people try for over 60 seconds or more until giving up, and I find this hilarious even today.
I could understand why people would believe this.
http://en.wikipedia.org/wiki/Traffic_signal_preemption#Line-...
In the US at least, that is how a significant number of these systems work. It's rather unlikely they would get the right frequency to trigger it, but it's certainly possible.