Your lawn, despite having a such neighbourhood zoning laws that dictate maintaining a lawn, specifically a lawn, or preventing washing lines, as much as an oddity as they are for someone alien to them, does not. Not a good comparison.
Some areas in China had a program like this. Turn people in, get a payment from the local government. What you would see is people going out, intentionally driving badly near other drivers in an effort to get them to speed away or make an illegal move just to get away from them, or to even start road raging in return and then they would start recording after the fact.
Finally, the last time I looked at the data, the correlation between speed and pedestrian deaths was not at all clear. Time of day was a much stronger point of correlation. The majority of pedestrian deaths happen after sun down and on the sides of road types you would not expect. I'm not sure how arming people with this rather unsocial technology is going to solve this exact problem.
Most definitely not true when the speeding motorist hits a pedestrian or a cyclist.
5,000lb, 100+mph (capable) motor vehicles are in an entirely different class than pedestrians and cyclists. They really should have segmented transit options.
1) pedestrians, cyclists, and drivers have to share space
2) speed limits aren't enforced on drivers
3) drivers that hit pedestrians at 40mph kill 50% of their victims; at 25mph, they only kill 10%.[1]
(1) is further exacerbated by the fact that any attempt to create space for pedestrians and cyclists by necessity requires repurposing space optimized for vehicles, and drivers oppose this tooth and nail.
An app is a crap solution, but anything that might help hold dangerous drivers accountable helps.
[1] https://aaafoundation.org/impact-speed-pedestrians-risk-seve....
No, delta-speed kills and seriously injures people. I was stoped on an off ramp yesterday in traffic with cars passing feet from me going 55+ mph. This was FAR more dangerous than being in a group of cars going 85mph in good conditions on a controlled access superhighway.
US speed limits are a joke and aren't even taken seriously by the people whose job it is to enforce them. Most of the US lets you go 10+ over with near-zero chance of police interdiction.
Both are dangerous. I've heard the delta-speed argument a lot before and its proponents do a good job explaining why it's bad, but the fact is that absolute speed does matter a lot too. Plus, delta-speed practically equals speed when a vehicle collides with a relatively stationary object like a pedestrian or a cyclist.
If your road/city/transportation system is _routinely_ creating high delta-speed (and delta-mass) interactions then it is poorly designed.
As I said elsewhere I have nothing against bikes, but I do have a bone to pick with people who suggest cars/bikes/pedestrians belong on the same grid such that they routinely interface with one another.
Do you believe that for roads with speed limits 25 mph or below?
that's not even entirely tongue in cheek either. speeding is very rarely the cause of collisions imo. As a disclaimer, I also believe drivers are solely responsible for accidents rather than phones taking partial responsibility when texting and driving is applicable, so maybe I am not aligned with the public on this subject in general