• Landless2029@lemmy.worldEnglish
    1064·
    26 天前

    This needs to be updated.

    Getting hit by a pickup truck at 30 MPH is similar to getting hit by a Honda Civic at 120 MPH for kinetic energy.

    That’s besides the fact that pickups have a much taller hood vs sedans so there are significantly higher rates of head/internal injury.

    Taller cars and trucks are more dangerous for pedestrians, according to crash data

    https://www.chicago.gov/city/en/sites/complete-streets-chicago/home/traffic-safety/vehicle-size-and-speed.html

    • vestigeofgreen@lemmy.dbzer0.comEnglish
      30·
      26 天前

      Your math is wrong. Kinetic energy scales linearly with mass, quadratically with speed. The graphic you included supports the idea that at same speed, the pickup truck has double the KE. The 120 mph sedan has dramatically more KE than a 30 mph pickup.

      Assuming that your sedan has exactly half the mass of the pickup, it would match a 30 mph pickup’s KE at 30*sqrt(2) mph, which is somewhere between 40 and 45 mph.

    • HereIAm@lemmy.worldEnglish
      9·
      25 天前

      There’s quite a large discrepancy between this image and OPs image. This image says the survival rate of 30 mph (48 kph) is 60%, while OP’s image says 50 kph it’s at 20%. I wish they included a source for the data that could explain it.

      This is the same issue I take with braking distance scales. They often vary wildly, and some don’t even follow a quadratic increase in distance like you’d expect.

    • 8baanknexer@lemmy.worldEnglish
      9·
      25 天前

      The energy difference is only really relevant if the thing you’re hitting is significantly heavier or at least similarly heavy like a house or another car. For a person it’s still much worse, but that is moreso because of the high hood of the car.

      I know pickup trucks are heavy, but I’m surprised they are 16 times heavier than a Honda civic. The more you learn.

      • Omgpwnies@lemmy.worldEnglish
        71·
        25 天前

        We wouldn’t have so much trouble with this if all men had the same size dick upbringing that leads to the sort of maturity that leads people to be not shit.

        Let’s not bring body shaming into this mmkay?

    • Seth Taylor@lemmy.worldEnglish
      5·
      25 天前

      Well… the person in the last photo looks like they’re not happy about getting hit by a moving vehicle at all.

      • Landless2029@lemmy.worldEnglish
        14·
        26 天前

        I’d rather be hit by that at 20 MPH instead of a full duty lifted pickup with a fresh shiny paint job on chrome wheels (mall crawlers)

        I don’t think pickup trucks should be banned. They should be commercial use only. It’s not a family car or a daily driver.

        Fuck mall crawlers

          • Landless2029@lemmy.worldEnglish
            5·
            26 天前

            So they passed laws for emissions and fuel efficiency of passenger vehicles to help with pollution.

            These laws force MPG ratings on sedans and SUVs. But they’re looser for trucks. Car manufacturers realized its also looser since its calculated by weight.

            So these fuckers decide to build SUVs on pickup truck frames and make pickups even bigger so they don’t have to tighten up the fuel efficiency…

            This is one of the main reasons there are so many bigger class vehicles being made now.

            Add in all the new LED headlights. Which are too bright because the regulations are outdated based on wattage instead of lumens.

            So you have taller vehicles with brighter headlights blinding everyone.

            I’m at the point where I’m aiming for a SUV instead of a sedan for my next car…

  • otp@sh.itjust.worksEnglish
    13·
    26 天前

    Damn. I didn’t realize it was so drastic. 100% fatality rate seems crazy, even rounded

    • Spendius@lemmy.worldEnglish
      4·
      25 天前

      Good thing we went from 60 to 50 km/h speed limit in the cities. We should go even lower!

      • Axolotl@feddit.itEnglish
        2·
        24 天前

        Some Italian cities (like Bologna) already have adopted 30km/h speed limit in 70% of the streets

  • Imgonnatrythis@sh.itjust.worksEnglish
    13·
    26 天前

    Great now do SUVs for the Americans. Go ahead and assume they are not simultaneously being shot at just for the purpose of keeping the simulation simple.

  • olympicyes@lemmy.worldEnglish
    7·
    25 天前

    There’s a new neighbor at the end of our street with small children. She always puts one of those green children at play signs in her front yard, yet insists on driving 25-30mph down our suburban street. The rest of the neighbors hate her.

      • Cataphract@lemmy.mlEnglish
        31·
        25 天前

        I’m guilty of this when using a web browser, I’ll scroll down a page and open relevant posts into new tabs until I’ve accrued several. Sometimes I don’t get to them for quite a while so if I upvote it’s surprising how high the number jumps until I realize it’s sat there for half a day.

        I try to refresh when commenting because 9/10 times someone else has already commented the same thing since the internet is dead but sometimes I forget.

      • psud@aussie.zoneEnglish
        1·
        23 天前

        The op image uses speeds much slower than that. The top speed in op is 60km/h which is about 35mph

    • Tiresia@slrpnk.netEnglish
      4·
      25 天前

      So multiply by 0.62.

      I believe in you, this is what all those years in grade school trained you for.

  • piranhaconda@mander.xyzEnglish
    2·
    24 天前

    Oh neat, I’m one of the green people in the first two rows. Not 100% sure how fast they were going, somewhere in that range. Just glad it was a short sedan and not a big truck/SUV. I live in the US, could’ve easily been a truck and ran over me instead of me toppling onto the hood.