Road diets: designing a safer street

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  • Published on:  Thursday, July 19, 2018
  • Reconfigure the lanes and the traffic will calm.Subscribe to our channel!​ is a news website that helps you cut through the noise and understand what's really driving the events in the headlines. Check out​​.Watch our full video catalog:​ Follow Vox on Facebook:​ Or Twitter:​ ​ the course of the 20th century, the car became America’s dominant mode of transportation. As vehicle miles travelled soared well past the rate of population growth, demands on the roadway surged. Congestion became a major issue. So transportation planners made the roads wider and added traffic lanes.Today, we now know that bigger roads and extra traffic lanes do nothing to solve congestion. In fact, it tends to induce even more traffic. So we didn’t fix the congestion issues, and on top of that, we built wide roads that are relatively unsafe.Transportation planners in the 21st century recognized that many of the roads that were overbuilt could be redesigned to calm speeding and add space for newer multimodal transportation options. And thus, the road diet was born.The video above explains why road diets are implemented, and how planners survey the feasibility of a lane reconfiguration. You can learn more about road diets with the following resources:


  • Sebastian Elytron
    Sebastian Elytron  a years ago +1620

    I tried the road diet. Although roadkill is a good source of protein I found the lack of carbs unsatisfying and unsustainable. Even Paleo is easier.

  • Cities & Skyscrapers
    Cities & Skyscrapers  a years ago +1304

    Awesome! I’d like to see more video from you about city planning and management!

  • William R
    William R  a years ago +91

    how about we stop fat-shaming roads?! jesus....

  • Seve Garza
    Seve Garza  a years ago +409

    Thank you for mentioning that context matters. There are many situation where toad diets are not the answer. Or it may improve some aspects while making other aspects worse. Context is key!

  • F J
    F J  a years ago +613

    I'm currently doing an internship for my city's department of transportation, and the most things we are working on are road diets, bike lanes, and complete streets. It seems really complex but its actually one of most fascinating and simple systems to implement. So when I saw this video pop up in my notifications I totally nerded out. Thanks for talking about interesting but fairly unknown topics!!

  • Check My Playlist
    Check My Playlist  a years ago +632

    Phew, I thought they were going to take away fast food restaurants from roads because people want to go on a diet

  • ncooty
    ncooty  a years ago +141

    @2:26 This graph depicts data for pedestrian deaths from being struck by an automobile, but the video describes auto-auto collisions.
    I find that Vox often undercuts its credibility through misrepresented and poorly used data.

  • Martijn 647
    Martijn 647  a years ago +32

    Wow America, welcome to the 21st century.

  • TheBatchingis
    TheBatchingis  a years ago +93

    Wouldn’t only 1 lane make more traffic ?

  • Sebaxtain
    Sebaxtain  a years ago +11

    If you are a thicc road and you saw this video don't worry, you are beautiful :) #stoproadshaming

  • Caroline Little
    Caroline Little  a years ago +27

    As someone who lives in suburban California I was very skeptical watching this video until he mentioned how much more the volume of traffic is here than other places. It’s a nice idea for places like Iowa but I think if they tried to implement that where I live I’d spend the rest of my life sitting in traffic😂

  • JazzyNym
    JazzyNym  a years ago +57

    And then in Virginia you have two-lane roads that get backed up because people want to avoid I-95 like the plague, but then get on country roads where they're too scared to go the 45/50mph speed limit because they've never dealt with windy back country roads before, causing us that DO know how to navigate them to get backed up because there are only about 2 spots that you can pass them but there's always oncoming traffic. Honestly, I abhor two-lane roads no matter what; there should always be a passing lane in my opinion, and then educate people so they understand HOW passing lanes work (I'm looking at you 'oh I have to turn left in 18 miles so I'll just hang out in the left lane until then' person).

  • The_Cre8r
    The_Cre8r  a years ago +6

    I wish people would use that middle road to turn left instead of using it to merge into traffic.

  • J B
    J B  10 months ago +4

    normal in germany since like 1960

  • Mars
    Mars  a years ago +207

    Since you can't pass, this makes slow drivers the king of the lane, and can pick the speed of everyone else behind them, which causes road rage, which can cause dangerous maneuvers such as passing illegally.

  • Mike Koss
    Mike Koss  7 months ago +8

    This idea only makes sense when traffic volumes are low; i.e., when a 4 lane road was never needed in the first place. As the end of the video points out - CA has had a big backlash with this design and this experiment had to be reverted.

  • Mal Yah
    Mal Yah  7 months ago +5

    The road diet in the Philippines is crazier. They're planning to turn a 10-lane road into a 12-lane.

  • Archangel
    Archangel  a years ago +4

    i don't want people to go 7mph slower, ppl need to go like 10mph faster. Ya im talking you all you people who go 65 in a 70 zone especially in the left lane get the hell out of my way.

  • meow meow
    meow meow  a years ago +110

    why do Americans hate round abouts so much? I just assumed they were common place in all countries but I went to the states last year & where a round about would have been more time/cost/life saving, there were giant intersections and a hundred stop many accidents/agression and so much congestion could have been prevented and I feel like it's the same with this video.
    The main benefit they show, the fewer collision points, still just seems like a less effective alternative to a round about...

  • John Turner
    John Turner  8 months ago +6

    There's a community in Southern California who's road diet on their 3 paths to LA increased fatal accidents by 400% and travel times by 300%. So, while it's probably a good idea IN cities, it doesn't work between them.