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Police use ultrasonic device to make sure drivers stay 3 feet from cyclists

arstechnica.com

21–30 of 71 posts

Re: Police use ultrasonic device to make sure drivers stay 3 feet from cyclists

#21
post #10

Earlier quoted context omitted.

We do ask people to guess whether or not they are committing DWI/DUI though, which is a huge problem in my opinion. Cockeyed.com sums it up better than I can: http://www.cockeyed.com/science/breathalyzer/breathalyser01.... > Monitoring blood alcohol levels is difficult. Holding people accountable for crossing the .08 limit is like holding them accountable for trespassing once they walk past a particular longitude. Th…

There's two ways to ensure that you aren't inadvertently running afoul of drinking and driving laws: you can either not drink, or wait a large amount of time after drinking before you drive. Same with passing bicycles - you can give them so much more than three feet that there's no chance that you're within three feet of them, or not pass them until there is that much room. Three feet is the minimum. The expectation…

Should we treat speed limits the same way, so everyone drives around at a crawling pace?

Re: Police use ultrasonic device to make sure drivers stay 3 feet from cyclists

#22

Now if they'd only come up with some device to make sure cyclists stop at stop signs and red lights.

While I'm personally in favor of the Idaho Stop, the traffic laws are definitely enforced on cyclists in my locale. As I understand it, the police follow the same "logic" for bikes and cars, regarding where and when to direct actual enforcement efforts.

Re: Police use ultrasonic device to make sure drivers stay 3 feet from cyclists

#23
post #10

Earlier quoted context omitted.

There's two ways to ensure that you aren't inadvertently running afoul of drinking and driving laws: you can either not drink, or wait a large amount of time after drinking before you drive. Same with passing bicycles - you can give them so much more than three feet that there's no chance that you're within three feet of them, or not pass them until there is that much room. Three feet is the minimum. The expectation…

Should we treat speed limits the same way, so everyone drives around at a crawling pace?

You could do that. But most cars come with a handy dashboard-mounted speed indicator device, often in plain view of the driver - so you could use that to determine your car's speed instead.

Re: Police use ultrasonic device to make sure drivers stay 3 feet from cyclists

#24

California has the same law. This is a great way to get tools into the hands of police to help them enforce the law and educate drivers.

And if you decide to ride in the middle of a lane while on a bike, should the car drive in the other side of the road to pass you? This tool is arbitrary and will not change the problem, lack of dedicated bike lanes.

They should. If you choose to pass a motor vehicle that is driving in front of you, and it's legal, you would cross the center line to do it. In Maryland, bicycles are considered vehicles so they should be accorded all the rights and responsibilities that go along with that designation. If the law says to give them three feet, you give them three feet even if you have to wait for the clearance to do it. I agree that bikes should have their own dedicated lanes but in the interim we have to deal with the law as it is. I used to drive a truck; I'm kind of a stickler for the rules.

Edit: As an aside, I'd rather have a bicyclist ride in the center of the lane as opposed to the side. I've had too many close calls where cyclists swerved out of the way of an opening door and closed the gap quickly.

Re: Police use ultrasonic device to make sure drivers stay 3 feet from cyclists

#25
post #15
post #8

PA law is actually four feet, but given the width of bike lanes this is sometimes physically impossible.

It's not impossible. If there isn't a safe distance to pass a cyclist you have to wait until there is a safe distance.

well, yes. i'm mostly a pedestrian, not on either side here.

Re: Police use ultrasonic device to make sure drivers stay 3 feet from cyclists

#26

Now if they'd only come up with some device to make sure cyclists stop at stop signs and red lights.

Now if only they'd come up with a device to make sure drivers stop at stop signs.

https://www.youtube.com/watch?v=GneVKDI_bEc

Re: Police use ultrasonic device to make sure drivers stay 3 feet from cyclists

#27

California has the same law. This is a great way to get tools into the hands of police to help them enforce the law and educate drivers.

And if you decide to ride in the middle of a lane while on a bike, should the car drive in the other side of the road to pass you? This tool is arbitrary and will not change the problem, lack of dedicated bike lanes.

This tool is not arbitrary.

> If you decide to ride in the middle of a lane while on a bike, should the car drive in the other side of the road to pass you?

Where I live, bicycles are vehicles. They are vehicles, and vehicles have the right to use the entire lane; Especially when there are no bicycle lanes.

Re: Police use ultrasonic device to make sure drivers stay 3 feet from cyclists

#28
post #20

For the entrepreneurs here, I promise to order a $200 version of this. Ideally it'd just be a mount I'd drop my phone into so that I could, say, pair it with Bluetooth and have an app that simultaneously records video with overlaid range and GPS information. I would pretty much immediately start documenting the routes I ride.

Why not make your own...

https://www.sparkfun.com/search/results?term=ultrasonic

Re: Police use ultrasonic device to make sure drivers stay 3 feet from cyclists

#29
post #20

For the entrepreneurs here, I promise to order a $200 version of this. Ideally it'd just be a mount I'd drop my phone into so that I could, say, pair it with Bluetooth and have an app that simultaneously records video with overlaid range and GPS information. I would pretty much immediately start documenting the routes I ride.

http://www.homedepot.com/p/Bosch-130-ft-Laser-Distance-Measu...
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