I was just wondering if you have in your area of traffic lights that are connected to railway crossing. If so, how do they operate when the train is approaching the crossing?
There are specific loop detectors that are sized for bicycles, but most installed are the larger sized ones for cars. AI can of course be trained to detect bicycles in addition to cars, but I'm not as sure how much they are deployed in the field.
As @stevenwjudd mentioned below, there are specific bike zones you can utilize when setting up the detection. Smaller in size, they're supposed to be more sensitive. However, I've seen bikers get detected in vehicle zones as well without a problem. Another reason I like video detection over inductive loops for bikers...one of the biggest complaints I recieve is that a biker is not detected at a intersection when inductive loops are deployed (they usually are not designed with bikers in mind). Great question!
Shouldn't you set queue=1 on det 50 and 56? If I understand it right, queue=1 should be set on a detector behind another detector, so the controllers "queue and congestion program" can know that a queue is building up on a phase and expedite servicing that phase. Guess that isn't such a big problem today when the gas station is still in construction, but when that gas station opens and they start getting customers, I guess it will start becoming a problem with bigger queues on those phases, especially as like 3 cars is gonna block the exit from that gas station. But I wonder, how is video detection going in the dark? Guess you have strong IR lights but otherwise they would work pretty bad in the night and need some complement like microwave/radar detection that turns on in the night instead of video detection.
Hey Sebastian, To answer your first question...I've never used that option! LOL But reading up on it in the manual, looks like it is used in conjuction with QLimit selection (QLimit = 0-255 secs-- The time an actuation from a Queue detector may continue into the assigned Phase Green. This time begins when the Phase becomes Green and when it expires any associated detector inputs are ignored). That was straight from the manual... It looks also like the queue option is a little more tight on the timing as it looks for the first gap in traffic and then wants to terminate the phase (at least that's my understanding). I'm sure it has it's application but I've never found any use for it. Your second question--it seems to work fairly well as the headlights are picked up by the detector zone as well. Sometimes too well...which is why I like to put delays on my front zones so that they are not inadvertley triggered by traffic coming from perpendicular direction. Great question!
I was just wondering if you have in your area of traffic lights that are connected to railway crossing. If so, how do they operate when the train is approaching the crossing?
Great question! I have had several curious youtubers asking your exact question. I have it on my TO-DO video requests. Stay tuned!
why is this in my recommended lol
Because it's the best! LOL
How well does the detection pick up a bicyclist?
There are specific loop detectors that are sized for bicycles, but most installed are the larger sized ones for cars. AI can of course be trained to detect bicycles in addition to cars, but I'm not as sure how much they are deployed in the field.
As @stevenwjudd mentioned below, there are specific bike zones you can utilize when setting up the detection. Smaller in size, they're supposed to be more sensitive. However, I've seen bikers get detected in vehicle zones as well without a problem. Another reason I like video detection over inductive loops for bikers...one of the biggest complaints I recieve is that a biker is not detected at a intersection when inductive loops are deployed (they usually are not designed with bikers in mind). Great question!
@@stevenwjudd THanks for your thorough explanation!
Shouldn't you set queue=1 on det 50 and 56? If I understand it right, queue=1 should be set on a detector behind another detector, so the controllers "queue and congestion program" can know that a queue is building up on a phase and expedite servicing that phase. Guess that isn't such a big problem today when the gas station is still in construction, but when that gas station opens and they start getting customers, I guess it will start becoming a problem with bigger queues on those phases, especially as like 3 cars is gonna block the exit from that gas station.
But I wonder, how is video detection going in the dark? Guess you have strong IR lights but otherwise they would work pretty bad in the night and need some complement like microwave/radar detection that turns on in the night instead of video detection.
Hey Sebastian,
To answer your first question...I've never used that option! LOL But reading up on it in the manual, looks like it is used in conjuction with QLimit selection (QLimit = 0-255 secs--
The time an actuation from a Queue detector may continue into the assigned Phase Green. This time begins when the Phase becomes Green and when it expires any associated detector inputs are ignored). That was straight from the manual...
It looks also like the queue option is a little more tight on the timing as it looks for the first gap in traffic and then wants to terminate the phase (at least that's my understanding). I'm sure it has it's application but I've never found any use for it.
Your second question--it seems to work fairly well as the headlights are picked up by the detector zone as well. Sometimes too well...which is why I like to put delays on my front zones so that they are not inadvertley triggered by traffic coming from perpendicular direction.
Great question!