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Motion Sensors Mounted At Intersections Adjust Traffic Signals -- For Bikes!

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Motion Sensors Mounted At Intersections Adjust Traffic Signals -- For Bikes!

Old 08-02-11, 07:57 PM
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volosong
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Motion Sensors Mounted At Intersections Adjust Traffic Signals -- For Bikes!

So says the Drudge Report headline. The article can be found by clicking this link at CBS San Francisco. New signal sensors are in Pleasanton. Reading the comments, there sure is a lot of hate out there ... going both ways.
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Old 08-02-11, 08:04 PM
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Mike F
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Nice! Hope it catches on.
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Old 08-02-11, 08:15 PM
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Lots of controversy with red light cameras at intersections for cars here in the Tampa area. I can imagine what people would say if they added sensors to allow bikes to go through an intersection and they had to wait at a light for 15 more seconds. I'm sure it's the same all over the country, but in this area, people are just in too much of a hurry to get wherever they're going. A training officer of mine used to say, "If where you're going isn't there when you get there, then you didn't need to go there in the first place." Personally, I like the idea.
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Old 08-02-11, 09:16 PM
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13 to 15 seconds extra? I assume this is supposed to be from the safety standpoint that since a bicycle is moving slower than a car, the 2-3 second yellow isn't enough time for the bike to clear a wide intersection. I understand the tense feeling when it turns yellow and you know you'll still be crossing the last couple of cross-traffic lanes when it goes red, but an extra 2 or 3 seconds would be plenty.

Oh, and some of those comments literally advocate violence. And some of them would get a 41 thread kicked to P&R in a flash. Pathetic.
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Old 08-02-11, 09:23 PM
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Originally Posted by urbanknight View Post
Oh, and some of those comments literally advocate violence. And some of them would get a 41 thread kicked to P&R in a flash. Pathetic.
I totally agree.
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Old 08-02-11, 09:26 PM
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Originally Posted by urbanknight View Post
13 to 15 seconds extra? I assume this is supposed to be from the safety standpoint that since a bicycle is moving slower than a car, the 2-3 second yellow isn't enough time for the bike to clear a wide intersection. I understand the tense feeling when it turns yellow and you know you'll still be crossing the last couple of cross-traffic lanes when it goes red, but an extra 2 or 3 seconds would be plenty.

Oh, and some of those comments literally advocate violence. And some of them would get a 41 thread kicked to P&R in a flash. Pathetic.
In general I find it really disturbing how stupid a good percentage of the population is.
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Old 08-02-11, 09:38 PM
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I don't understand why so many of my countrymen are such blistering idiots. I really don't. Those types of comments in the article make me want to disrupt traffic just to piss them off.


Christ, there's something clinically wrong with Republicans. I'm convinced at this point in time it's a mental disorder.
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Old 08-02-11, 09:47 PM
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Originally Posted by ErichM View Post
In general I find it really disturbing how stupid a good percentage of the population is.
Given a standard bell curve, half of the population is below average...
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Old 08-02-11, 09:50 PM
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Originally Posted by John_V View Post
Lots of controversy with red light cameras at intersections for cars here in the Tampa area. I can imagine what people would say if they added sensors to allow bikes to go through an intersection and they had to wait at a light for 15 more seconds.
Actually, one major reason for the enhanced sensors is to reduce the waiting time for motorists. A recent state rule requires new and modified traffic signals to allow sufficient time for a cyclist to cross the intersection before the conflicting traffic gets a green light. Without the enhanced detectors this means that traffic will always be delayed for a few extra seconds when the lights change even if there isn't any cyclist in the intersection. The new detectors allow the lights to cycle faster when no cyclists are detected and only provide the extended time when a cyclist is actually in the intersection at that time.

We did have a group ride through the intersection mentioned in the article just last week and noticed that the green left-turn arrow stayed lit for our whole group of about 20 cyclists to make the turn. At intersections using the older loop detectors the left-turn arrow either isn't triggered at all for bicycles or only stays lit for a few seconds even when we have a long string of cyclists making the turn.
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