I wish he'd give me the source code. I could really use this in our neighborhood. Next step would be to have second and third cameras (if necessary) to get the license tag and a picture of the drive. Then erect a hall of shame board.
Citizen uses OpenCV to track speeders near his home
51–60 of 138 posts
Re: Citizen uses OpenCV to track speeders near his home
#52I'll copy a very interesting comment by Anton Largiader http://www.cvilletomorrow.org/news/article/22908-locust-aven... > One very interesting approach I have seen overseas is a traffic light that turns red if you are speeding as you approach it. It's incredibly effective; instant feedback on your behavior, and immediate loss of any time you gained by speeding. No ticket, unless you run the light. Drivers quickly con…
I like that idea but I do worry about it causing rear-end collisions. In an ideal world drivers wouldn't speed and they also wouldn't tailgate, but in the world we currently occupy both are extremely common (even amongst law enforcement). So while this would act to reduce speeding, the unpredictability may increase accidents and it is definitely going to reduce traffic flow.
Rear-end collisions are the responsibility of the person behind. If they're keeping the correct distance, there's plenty of time to stop without collisions.
Usually the lights are also a good distance after the radar so you have plenty of time to go from speeding to a halt :)
Re: Citizen uses OpenCV to track speeders near his home
#53A pretty common sight around here (western europe) which seems to work pretty well are dynamic reminder signs: electronic signposts with a speed radar, which simply displays your speed in green if you're under the limit, orange if you're a bit over and blinking red if you're way over (using fairly bright led arrays so it's visible in most conditions) Anecdotally, it seems to work pretty well, drivers do slow down whe…
Shame usually doesn't work in the US because speed limits are routinely underposted, usually by design. So e.g. 10 MPH over is not only socially acceptable, but often expected.
However they will usually keep drivers under 10 over the limit (that it believed by many to be the threshold for an officer to pull you over).
Re: Citizen uses OpenCV to track speeders near his home
#54Some commenters here are commenting as if speeding is some petty thing that doesn't matter. Speeding kills. Something as small as 10 miles over a 30mph may mean a doubling in fatality rate for pedestrians and bicyclists. One source: https://www.aaafoundation.org/sites/default/files/2011Pedest...
Speeding doesn't kill people, crashing kills people.
Re: Citizen uses OpenCV to track speeders near his home
#55Earlier quoted context omitted.
That's ridiculous. A 35mph collision with a pedestrian would almost certainly result in a dead pedestrian. 25mph is usually survivable.[1] A 20mph speed limit, strictly enforced would drop pedestrian fatality rates to essentially 0.[2] 1: http://humantransport.org/sidewalks/SpeedKills.htm 2: http://www.visionzeroinitiative.com/
The lowest limit in my state (aside from 15 in some parking lots) is 25. It is rare for anyone to go below 30, most are going about 35.
While getting onto a toll road in Oklahoma a few years ago, I was surprised to see a 17mph speed limit.
Re: Citizen uses OpenCV to track speeders near his home
#56I'll copy a very interesting comment by Anton Largiader http://www.cvilletomorrow.org/news/article/22908-locust-aven... > One very interesting approach I have seen overseas is a traffic light that turns red if you are speeding as you approach it. It's incredibly effective; instant feedback on your behavior, and immediate loss of any time you gained by speeding. No ticket, unless you run the light. Drivers quickly con…
I like that idea but I do worry about it causing rear-end collisions. In an ideal world drivers wouldn't speed and they also wouldn't tailgate, but in the world we currently occupy both are extremely common (even amongst law enforcement). So while this would act to reduce speeding, the unpredictability may increase accidents and it is definitely going to reduce traffic flow.
Well I imagined that it would turn red but at the same time give enough time to the driver to break. So the detector would be at least 300m or 400m from the light.
Re: Citizen uses OpenCV to track speeders near his home
#57> At 4:27 p.m. last Wednesday, the system caught a Route 11 city bus doing 34 mph. Which isn't even fast enough to get a ticket from local police. In my state (which is not Virginia, and it will vary everywhere), local police are prohibited from using radar and need to use an actual stopwatch to track your speed. Obviously very error prone, and they're supposed to basically give you 10 mph leeway - meaning on that ro…
The guideline I was taught was FWIW, I've never been pulled when I was following those guidelines (driving in GA + SC).
One of the rules of thumb taught to cops is "over by five, let 'em drive, over by 10, get out your pen"
Re: Citizen uses OpenCV to track speeders near his home
#58I'll copy a very interesting comment by Anton Largiader http://www.cvilletomorrow.org/news/article/22908-locust-aven... > One very interesting approach I have seen overseas is a traffic light that turns red if you are speeding as you approach it. It's incredibly effective; instant feedback on your behavior, and immediate loss of any time you gained by speeding. No ticket, unless you run the light. Drivers quickly con…
I like that idea but I do worry about it causing rear-end collisions. In an ideal world drivers wouldn't speed and they also wouldn't tailgate, but in the world we currently occupy both are extremely common (even amongst law enforcement). So while this would act to reduce speeding, the unpredictability may increase accidents and it is definitely going to reduce traffic flow.
How would it be any different from a normal red light?
Re: Citizen uses OpenCV to track speeders near his home
#59> At 4:27 p.m. last Wednesday, the system caught a Route 11 city bus doing 34 mph. Which isn't even fast enough to get a ticket from local police. In my state (which is not Virginia, and it will vary everywhere), local police are prohibited from using radar and need to use an actual stopwatch to track your speed. Obviously very error prone, and they're supposed to basically give you 10 mph leeway - meaning on that ro…
In the video it looks like there's a gradient applied to the speeds. The color of the speed read out changes from a greenish yellow to red orange around what seems like 10 mph. There one that's yellow at 34 and another that's red orange at 35. They don't say if the 25-35 gets binned differently but that's not too surprising, it's a local news piece not a presentation.
Even so just because the police aren't allowed to give you a ticket because of the measurement error or uncertainty or mercy doesn't discount that they're still speeding.
Re: Citizen uses OpenCV to track speeders near his home
#60It's interesting to look back at the responses [0] from just two years ago to Ford's admission that they know exactly who is breaking the law while driving their cars or what people were writing [1] in 2002 when ubiquitous surveillance of public space was becoming a reality.