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How To Build Roads To Control How Fast You Drive

An anonymous reader writes "They're the holy grail of transportation engineering: streets and highways specifically designed to encourage automobilists to drive less quickly, reducing the rates of passenger fatalities and generally encouraging a safer urban environment. And now new research shows that, if built right, they just might work. A new study out of the University of Connecticut suggests that minor reductions in vehicle speed are possible through changes in the street environment. Through the use of roadside parking, tighter building setbacks, and more commercial land uses, road designers can make drivers subconsciously drive more slowly." All of that is gonna work a lot better than my strategy of placing car-sized holes covered with twigs and branches randomly every half mile or so down the interstates.

4 of 801 comments (clear)

  1. Re:From the No Duh Dept. by somersault · · Score: 5, Interesting

    I was taught the same.

    But also going on a skid training course made me realise how much of a difference there is when emergency braking from 30 and emergency breaking for 20, it's quite dramatic when you actually try it (though no doubt when we were doing that they had the weight on the tires reduced using the rig attached to the car so that it took way longer to stop than a modern car). Putting pedestrians closer to and making them less visible to drivers does not make things safer. Just because a car is going slower does not automatically mean it is "safer". Sure it means it will cause less damage if it hits something, but if the car is more likely to actually hit something because of an inattentive driver or insane road designs, then how the hell is that "safer"?

    PS the lanes, walkways and roads here in the UK are generally thinner and more lined with cars than those in the US.. I don't know the different accident rates but it would be interesting to compare them. I suspect there would be more here.

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    which is totally what she said
  2. Other strategies... by petaflop · · Score: 5, Interesting
    In the UK we have lots of 'speed warning' signs. When you approach them, if you are exceeding the speed limit, they light up and tell you (and anyone behind you) how fast you are going. And that's all. No penalties. They seem to make a significant difference in residuntial areas. I think they are often paid for by the local community rather than the state.

    In Portugal I saw a cute system - if you pass a sensor driving faster than the speed limit, then a traffic signal 200yards/metres down the road turns red for 10 seconds, making you (and again anyone behind you) stop.

    The psychology behind these systems is interesting - both rely on shaming you in front of other drivers. The Portugese system goes further and makes other drivers angry with you for speeding.

  3. Re:From the No Duh Dept. by SIR_Taco · · Score: 5, Interesting

    True, but passenger fatalities will be reduced.... they said nothing about pedestrian fatalities.

    As much as their conclusion makes sense for their premise.... they're not looking at the entire picture.

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    I say don't drink and drive, you might spill your drink. Before you get behind the wheel just stop and think.
  4. Re:From the No Duh Dept. by Anarki2004 · · Score: 5, Interesting

    You shouldn't assume the entire population can drive. Try that again, but use licensed drivers/registered vehicles in place of the total population of the country. Also, I believe that the US has closer to 350m people (not that it matters since you won't be using that number).

    p.s: I would do it myself but I'm just too damn lazy.

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    The teachers will crack any minute, purple monkey dishwasher.