Live data from Hacker News

Is Every Speed Limit Too Low?

priceonomics.com

211–214 of 214 posts

Re: Is Every Speed Limit Too Low?

#211

Earlier quoted context omitted.

There's a lot of truth to that. Many places use 7-10 mph over as a threshold. Smaller tickets always get plead down, and cops get measured by collars or tickets. I don't think skirting the limits has much impact on behavior as the limits go up. In my personal observation, I've observed little if any difference between highway driving on the Deegan Expressway in NYC (50 mph), i95 in South Carolina (70/75) or the mass…

Is the statistic NYC posts a lie? For a few years they've had signs up claiming that 80% of pedestrians hit at 30 mph survive, while 75% of pedestrians hit at 40 mph were killed. That seemed like a pretty good reason to have lower speed limits in pedestrian areas to me.

I'm sure that it is true based in physics, but is a statistic without meaningful context.

Re: Is Every Speed Limit Too Low?

#212
post #182
post #172

Earlier quoted context omitted.

Off topic but related: almost all roads in The Netherlands are provided with speed detection induction loops. The data is open and there is a nice website showing the top speeds: http://www.bestwelsnel.nl/ (best wel snel = pretty fast)

That map looks like high scores in an arcade game encouraging you to beat them. Can you beat the 276 km/h (!!) or 247 km/h on what seems to be a long tunnel or a bridge? Is there any documented effect of that data being public to people trying to "beat" the speeds?

holy crap. that's 171mph

Re: Is Every Speed Limit Too Low?

#213
post #147

Earlier quoted context omitted.

I'm annoyed that the taboo thing to say in this discussion is whether increased traffic fatalities is always an inherently bad thing. When you're talking about societal-scale policy, it's impossible to make anything 100% safe; rather, it's about acceptable trade-off in risk. We could make a universal speed limit of 10mph and traffic deaths would probably vanish, but we don't because the impact on transport is too gre…

The tradeoff for speeding is stupidly small. Average US worker spends 25 minutes on a one-way trip to work. Lets assume an average speed of 60mph (hint: it's slower). If you went at 70 instead of 60, then you'll save a whole 3.5 minutes. Here( http://webcache.googleusercontent.com/search?q=cache:jWbI1mK... ) is a link to a NHTSA presentation on speed limit changes and its effects on crashes. Notably, when states were…

My goodness, that is quite a load of nonsense.

Re: Is Every Speed Limit Too Low?

#214
post #23

Earlier quoted context omitted.

The data in the Wikipedia article you cite can also be sorted by road fatalities by 1 billion vehicle/kms. This accounts for variance in population, auto ownership, and amount of driving. Country and traffic fatalities per 1b veh/kms. United Arab Emirates 310 Brazil 55.9 Slovakia 24.5 South Korea 22.8 Bulgaria 19.1 Estonia 17.5 Cyprus 16.7 Czech Republic 15.7 Malaysia 13.8 Spain 8.5 New Zealand 8.3 Japan 8.3 Belgium…

In New Zealand, the posted speed limit is often too high for the road. If you drive the speed limit, YOU WILL CRASH AND DIE - frequently taking another car with you. This is because: 1) Very few divided highways 2) Blanket speed limit of 100kph on open roads 3) Fun road obstacles - hairpin turns, single lane bridges, blind corners and no shoulder drops down cliffs.

Wow, I was thinking just that. It's the only place i've seen posting a 100km/h limit on a narrow, barely two lane winding road, hugging a cliff. It was almost like a dare. The speed I felt safe at was no more than 50 km/h
Post reply on HN