• ChaoticNeutralCzech@feddit.org
    link
    fedilink
    English
    arrow-up
    100
    ·
    2 months ago

    The gap you leave should be speed-dependent and about 2 seconds to allow for reaction time. Yes, this caps the highway’s capacity to 0.5 cars per second per lane but roads are inherently inefficient.

    • Mr_Blott@feddit.uk
      link
      fedilink
      arrow-up
      25
      ·
      2 months ago

      I was taught to look when the car in front drives past a landmark like a lamppost, then say to myself “Only a fool breaks the two second rule”

      If you pass the lamppost before you finish saying it, you’re too close

      • Sharp312@lemmy.one
        link
        fedilink
        arrow-up
        4
        ·
        2 months ago

        This is the only good answer. No need to distract yourself by figuring out your speed and guesstimating your gap like others are saying. Just count the seconds whenever you need to

    • GissaMittJobb
      link
      fedilink
      arrow-up
      6
      ·
      2 months ago

      3 seconds is the guideline I’ve been taught here in Sweden, but yeah. Riding too close is crazy dangerous and I don’t understand why people keep doing it.

  • Drusas@fedia.io
    link
    fedilink
    arrow-up
    84
    arrow-down
    3
    ·
    2 months ago

    If you’re only two lengths away from the car in front of you while driving at highway speeds, you are tailgating. Back off. It’s far more dangerous than speeding.

    • tonyn
      link
      fedilink
      arrow-up
      39
      ·
      2 months ago

      Help me out with this, because it’s driving me crazy. Whenever I leave anywhere close to 2 seconds between me and the car on front of me, someone cuts in, and I’m now too close to them, so I slow down, leaving a 2 second gap, and another cuts in. Rinse, repeat. I end up being the slow ass that everyone keeps zooming around unless I tailgate.

      • Dr. Wesker@lemmy.sdf.org
        link
        fedilink
        English
        arrow-up
        43
        arrow-down
        1
        ·
        2 months ago

        It just be that way. Idiots will see your safe following distance as their opportunity to switch lanes. Just keep being the safe one.

      • Kecessa@sh.itjust.works
        link
        fedilink
        arrow-up
        22
        arrow-down
        1
        ·
        2 months ago

        Just… Don’t care? Let people in and adjust the distance with them. Driving is an involved process, get a car with adaptive cruise control if you want one that will do exactly that for you.

        • tonyn
          link
          fedilink
          arrow-up
          8
          arrow-down
          2
          ·
          2 months ago

          I guess it’s more than just “caring” - I feel that we’d all be a lot safer if we were all going the same speed instead of inviting people to dodge in and out

          • kmaismith@lemm.ee
            link
            fedilink
            arrow-up
            7
            ·
            2 months ago

            It would be safer if we were all riding the train/bus. Getting in a car in america is accepting the risk that you share the road with everyone. no matter the qualifications or mental state we still all gotta get to work/grocery store/wherever, and the only way is by ~4000 pound metal speed box.

            Worrying about safety on the highway is about making sure you are in situations you can handle and react to, staying attentive to the styles and mental states of other drivers and being a step ahead of the road conditions

            • tonyn
              link
              fedilink
              arrow-up
              2
              ·
              2 months ago

              Unfortunately I can’t see how public transport would be feasible without accepting that the vast majority of places I might want to go are simply inaccessible, and the places I could go would take 3-5 times longer. Case in point, there are no public transportation options to get to my son’s high school. It would be a 35 minute bicycle ride. I can drive there in 12 minutes. Getting to my local Wegmans would take 37 minutes by bus. I can drive there in 9 minutes. I live on the outskirts of a medium size city on the east coast in a low density residential neighborhood.

          • Kecessa@sh.itjust.works
            link
            fedilink
            arrow-up
            2
            arrow-down
            1
            ·
            2 months ago

            But people need to change lane sometimes and if you’re the one giving them the space to do so then more power to you, don’t complain

    • Takumidesh@lemmy.world
      link
      fedilink
      arrow-up
      16
      arrow-down
      1
      ·
      2 months ago

      At 65mph, you cover two car lengths (~30 ft) in about 1/3 of a second.

      Typically human reaction time for braking is about 1.5 seconds.

      If something went seriously wrong in front of you (like a sideways car, or a hidden obstacle in front of the car in front of you) you would have covered 10 car lengths before your foot touches the brake pedal.

  • IMNOTCRAZYINSTITUTION@lemmy.world
    link
    fedilink
    arrow-up
    38
    ·
    2 months ago

    nothing gets me more pissed off than when I’m driving the speed limit on an open road with an open passing zone, no one coming towards me or ahead of me, and some dipshit decides to ride my ass

    • stoy@lemmy.zip
      link
      fedilink
      arrow-up
      56
      ·
      edit-2
      2 months ago

      Then you need to lift off the accellerator, don’t brake check or anything, just slowly slow down.

      If the car behind you won’t give you enough safety margin to maintain a high speed, then your only option to maintain safety is to reduce your speed so that the safety margin they give you is enough to stop in time for an accident.

      Here in Sweden we have plenty of roundabouts, I will use those to also get rid of annoying drivers who just can’t manage their distance, if I have someone like that behind me when I get to a roundabout, I just drive a full lap of the roundabout and let them pass.

      I will allways let these guys past when I can, they are in a rush to their own accident, and I am not, let them pass and and make them stop being my problem, if I can’t find a place to let them pass I will reduce my speed to compensate for their lack of safety margins

        • stoy@lemmy.zip
          link
          fedilink
          arrow-up
          11
          ·
          2 months ago

          It isn’t even a justification, it is simple defensive driving, as I was taught in driving school, and reenforced by my dad many times.

      • greenhorn@lemm.ee
        link
        fedilink
        English
        arrow-up
        2
        ·
        2 months ago

        Sometimes I increment my cruise control down a mph at a time to see how much I can get them to slow down

        • Honytawk@lemmy.zip
          link
          fedilink
          English
          arrow-up
          5
          arrow-down
          1
          ·
          edit-2
          2 months ago

          I just clean my windows.

          The speed and distance will make it so all the cleaner fluid will spray on their windshield. Making it all nasty.

          Feels like I am driving a spy car.

        • stoy@lemmy.zip
          link
          fedilink
          arrow-up
          1
          ·
          2 months ago

          My car can only increment in 5km/h steps, snd it is a bit too large to do this, but I would do this if I could

    • JovialMicrobial@lemm.ee
      link
      fedilink
      arrow-up
      5
      ·
      2 months ago

      Or you’re in the right hand lane and people are still tailgating you even though you’re going 70mph.

      Some people are unnecessarily aggressive on the road. Probably because they have unresolved emotional issues and take it out on other drivers. At least that’s what I tell myself.

      • Fuzzy_Red_Panda@lemm.ee
        link
        fedilink
        English
        arrow-up
        4
        ·
        edit-2
        2 months ago

        Probably because they have unresolved emotional issues and take it out on other drivers.

        Oh they absolutely do.

        Besides guns, motor vehicles are probably the most physically powerful things most of us (in the US) have the freedom to control in our lives. And there are almost no restrictions on allowing someone to drive when they can’t or won’t regulate their emotional state.

    • Mr_Blott@feddit.uk
      link
      fedilink
      arrow-up
      9
      arrow-down
      9
      ·
      2 months ago

      I’d be fuckin raging if someone was driving two car lengths behind me. That’s fucking idiotic

      • Hugucinogens@lemmy.blahaj.zone
        link
        fedilink
        arrow-up
        8
        arrow-down
        2
        ·
        2 months ago

        Yeah, when you’re going 90km/h, it’s fucking idiotic. It’s way too fucking close, you’re going to kill someone. Random brake check incoming!

        • Mr_Blott@feddit.uk
          link
          fedilink
          arrow-up
          4
          ·
          2 months ago

          I’m always tempted to do the brake check thing, but that’s fucking idiotically dangerous as well!

          I just take my foot off the throttle and gradually slow down until the shitty driver passes me

  • UncleGrandPa@lemmy.world
    link
    fedilink
    arrow-up
    30
    ·
    2 months ago

    I just moved to Michigan

    I have never seen a group of drivers so committed to Tail Gateing … Like it’s the state sport

    • lengau@midwest.social
      link
      fedilink
      arrow-up
      13
      ·
      2 months ago

      Visit Tennessee and get back to me. Moving from Tennessee to Michigan I noticed a distinct uptick in the quality of driving.

    • didntbuyasquirrel@lemmy.world
      link
      fedilink
      arrow-up
      2
      arrow-down
      1
      ·
      2 months ago

      I was driving in slowish freeway traffic in Detroit and the guy behind me plowed right into me, didn’t even slow down, didn’t even look away. He sort of bounced off of me, pulled onto the shoulder, and squeeled off while I had to find some sketchy spot to stop and make sure my bumper wasn’t dragging too much.

      A person I was visiting there in Detroit told me that insurance wasn’t required so many people run off rather than risk getting blamed and the cops wouldn’t even bother with a report.

      • greenhorn@lemm.ee
        link
        fedilink
        English
        arrow-up
        3
        arrow-down
        1
        ·
        2 months ago

        Insurance is required in all of Michigan, with fines, license suspension, and jail all possible for not having it. With Michigan’s no-fault insurance we have some of the highest rates in the country in Detroit—especially relative to income—and almost no viable alternative to owning a car.

        That said, as a native Detroiter I feel safer in Detroit driving around other Detroiters, the suburbanites and out of state folks are always in the way.

        • didntbuyasquirrel@lemmy.world
          link
          fedilink
          arrow-up
          1
          ·
          2 months ago

          I thought I heard that insurance laws changed maybe since then or around that time and there was a reason for a lot of hit and runs. I don’t know, but that was my experience a while ago. The weird part was mostly how the dude had no visible reaction at all except to take off, which probably could’ve been anywhere.

          As an out of towner I did have trouble with the short on ramps. I wasn’t sure how to get into a rhythm because there was no place to get up to speed. I didn’t like feeling like I had to shove my way in and it was hard to tell how to let others in safely. I suppose you just know those things when you live there long enough.

          • greenhorn@lemm.ee
            link
            fedilink
            English
            arrow-up
            2
            ·
            2 months ago

            Those are some of the first below-grade expressways built in the country, so the shorter on ramps are from an era with fewer and slower cars, and there isn’t space to lengthen them. The law only changed to stop the insurance companies from using zip codes to determine rates, and reduced the maximum payout for healthcare related costs from a crash, with the aim of lowering costs, but of course the insurance companies worked around it.

            • didntbuyasquirrel@lemmy.world
              link
              fedilink
              arrow-up
              1
              ·
              2 months ago

              I learned about the infrastructure at the time but that’s why being unaccustomed was a hinderance, especially when it’s unexpected. The insurance stuff seems likely more in line with what I was told than what I was remembering in short.

    • Trainguyrom@reddthat.com
      link
      fedilink
      English
      arrow-up
      10
      arrow-down
      2
      ·
      2 months ago

      I tend to annoy people by dropping off the gas much sooner for lights than strictly necessary, but by gently slowing I both save gas, wear and depending on the timing of the light I can often even time it to miss the red entirely

  • alienanimals@lemmy.world
    link
    fedilink
    arrow-up
    27
    arrow-down
    1
    ·
    edit-2
    2 months ago

    Intelligent people leave a space of about two cars ahead of them on the freeway.

    Stupid people think that space must be for them.

        • porous_grey_matter
          link
          fedilink
          arrow-up
          5
          ·
          2 months ago

          This is it. Absolute minimum two seconds in perfect conditions, four if it’s raining/dark/whatever.

      • fine_sandy_bottom@lemmy.federate.cc
        link
        fedilink
        arrow-up
        2
        arrow-down
        1
        ·
        2 months ago

        It depends.

        On a well developed well maintained “freeway” with multiple lanes, shoulders for break downs, gentle curves, et cetera it’s common. 3 car lengths is more common here I think.

        That said, on a “highway” (interstate?) without everything listed above I aim for 2 seconds, which is about 60 metres at highway speed.

      • greyw0lv
        link
        fedilink
        arrow-up
        3
        ·
        2 months ago

        Back when i drove. I was taught 3 car lengths, or 3 seconds. Whichever is greater.

  • ThatWeirdGuy1001@lemmy.world
    link
    fedilink
    arrow-up
    28
    arrow-down
    2
    ·
    2 months ago

    I think my biggest pet peeve about driving is when you come to a stop and the car behind you tries to shove their nose up your ass. Like bruh you don’t need to ever be that close

    • OR3X@lemm.ee
      link
      fedilink
      arrow-up
      11
      ·
      2 months ago

      Especially annoying if you’re driving a manual and are stopped on an incline.

      • ThatWeirdGuy1001@lemmy.world
        link
        fedilink
        arrow-up
        8
        ·
        2 months ago

        I drive a 6 speed. This is where my rage for this comes from.

        But even in automatics rollback isn’t uncommon on an incline.

        • Possibly linux@lemmy.zip
          link
          fedilink
          English
          arrow-up
          2
          ·
          2 months ago

          I feel like it really isn’t your fault if you role back 6 inches and hit them. If you were to roll back 4 feet it would be different but in this case you can’t control something so small.

          • ThatWeirdGuy1001@lemmy.world
            link
            fedilink
            arrow-up
            3
            ·
            2 months ago

            In court it won’t be your fault if they’re that close, but it’s still the hassle of dealing with people who don’t understand basic driving etiquette.

        • OR3X@lemm.ee
          link
          fedilink
          arrow-up
          2
          ·
          2 months ago

          I can usually set off on an incline with no rollback but I’ll be damn if it doesn’t slightly stress me out every time someone pulls that shit.

    • AgentGrimstone@lemmy.world
      link
      fedilink
      arrow-up
      7
      arrow-down
      1
      ·
      2 months ago

      My driving instructor taught me that I should still be able to see the other car’s back wheels when I stop. I actually don’t know how close that looks from the other driver’s perspective.

      • Possibly linux@lemmy.zip
        link
        fedilink
        English
        arrow-up
        3
        arrow-down
        1
        ·
        2 months ago

        What it looks like:

        1000005472

        Not actually as the “see the tires” rule is fairly good advise. Keep in mind sometimes it is smarter to give a little more space depending on the situation. Think of it as more of a minimum. Also lose most of your speed farther back and then role forward. This allows for recovery time in case of failure or loss of traction.

      • SwingingTheLamp@midwest.social
        link
        fedilink
        English
        arrow-up
        5
        arrow-down
        3
        ·
        2 months ago

        Terrible, terrible advice. That leaves a full car-length of empty pavement with the driver sight-lines of modern SUV and crossover designs. Pickup trucks are worse; I’ve seen pickup truck drivers stop a full 30 feet back. It wastes huge amounts of space on the street, and causes traffic congestion. On the other side of the coin, van and bus drivers can still get right up on your ass when following this advice.

        • Sauerkraut@discuss.tchncs.de
          link
          fedilink
          arrow-up
          2
          ·
          2 months ago

          I hate breathing in pollution so I keep a car’s length between me and the next car at traffic lights. Cars themselves are a huge storming waste of space and I hate being in or around cars with all my heart and soul so if I make traffic worse then I will consider it a passive form of protesting against car dependency

    • TimewornTraveler@lemm.ee
      link
      fedilink
      arrow-up
      1
      ·
      edit-2
      2 months ago

      At a stop? Who cares? Can’t being closer together at a stop light at least help with intersections? I guess it depends on the city.

      If you’re driving a manual and you roll back on a stop, you shouldn’t be driving a manual. Unless you live in like San Francisco I guess? In the Appalachian region, cops will stop you for rolling back.

      • ThatWeirdGuy1001@lemmy.world
        link
        fedilink
        arrow-up
        1
        ·
        2 months ago

        Ever heard of clear distance? If you’re at a stop and someone rear ends you and you hit the car in front of you you are at fault and will be held liable.

        As for the rollback in my state they’ll again look at distance. Because if I don’t have enough space to back up because you’re too close you’re once again at fault for not having clear distance.

        On top of all that it helps move traffic along faster. You don’t have to wait as long to accelerate if you maintain distance because you don’t have to wait for the car in front of you to move far enough to start accelerating.

        Getting bumper to bumper has zero benefits outside of the false psychological feeling of forward progress.

    • desktop_user@lemmy.blahaj.zone
      link
      fedilink
      arrow-up
      6
      arrow-down
      7
      ·
      2 months ago

      if they are following the two second rule they should be less than a foot from your car. If your car is stopped you are always more than two seconds from the car in front of you.

      • ThatWeirdGuy1001@lemmy.world
        link
        fedilink
        arrow-up
        16
        arrow-down
        3
        ·
        2 months ago

        So you can hit the car in front of you too?

        It’s not only a safety hazard but it leads to slower traffic. If you maintain the right distance at a stop the whole line of cars can accelerate faster because you don’t have to wait as long for the car ahead of you to move. There are zero actual benefits of sniffing my ass at a stop.

  • Dearth@lemmy.world
    link
    fedilink
    arrow-up
    23
    ·
    2 months ago

    When i was 13 bill Clinton told me 1 car length per every 10mph i was traveling at. Ive been following that advice ever since

    • Dozzi92@lemmy.world
      link
      fedilink
      arrow-up
      6
      ·
      2 months ago

      And I know it’s state dependent, but the highways by me, each white line is about one car and each gap is one car, so if you’re doing 50, having two to three white dashed lines between you and the car in front of you is probably good.

      • SuperSpruce@lemmy.zip
        link
        fedilink
        arrow-up
        4
        ·
        2 months ago

        Fun fact: In most states, this length is 40ft, but there are some exceptions, like CA, where it’s 24ft or 48ft depending on the road.

  • Agent641@lemmy.world
    link
    fedilink
    arrow-up
    24
    arrow-down
    2
    ·
    2 months ago

    When I leave two car lengths, four cars will go into it, and at least one of their drivers will throw a half empty beer can at me.

  • lohky@lemmy.world
    link
    fedilink
    arrow-up
    21
    ·
    2 months ago

    My car’s “smart cruise control” leaves what seems to be around a car length for every 10 mph, which is what I remember hearing in driving school. Feels a bit excessive in practice, but I also never feel like I’m being an asshole so I’m okay with it.

    • cynar@lemmy.world
      link
      fedilink
      English
      arrow-up
      16
      ·
      2 months ago

      I was rear ended, HARD once. That distance gave me the space to control both my vehicle, and the one that hit me. It turned a potential multi car, multi lane pileup into a 2 vehicle wreck, either 1 more dinged car.

      The space isn’t for the 99.999% of the time, but that 0.001% OH FUCK time.

      • lightnsfw@reddthat.com
        link
        fedilink
        arrow-up
        1
        ·
        2 months ago

        I almost had that happen to me a year ago. Traffic had stopped on the interstate and I hear skrrt, skrrt, skrrt, skrrt getting closer and closer to me. I looked up in my mirror and see a Silverado rapidly closing the distance and thought “god damn it”. I fortunately left enough room between me and the car in front of me that I was able to give him some more space and turned a full on collision into a tap that didn’t do any damage. Pretty sure my foot was actually off the brake when he hit me and that helped absorb some of it as well. I was still pretty pissed though because I had more than enough time to think about all these things and consider moving onto the shoulder but I thought he would do that instead and still hit me with how fast he was going. Being an idiot, he did not and hit me anyway.

        • cynar@lemmy.world
          link
          fedilink
          English
          arrow-up
          2
          ·
          2 months ago

          I’ve dodged similar collisions a couple of times, over the years. Unfortunately, this time, she didn’t even touch the brakes. I was hit with a 50 mph differential, and no warning whatsoever.

    • Possibly linux@lemmy.zip
      link
      fedilink
      English
      arrow-up
      4
      ·
      2 months ago

      Well you want the automated system to be overly safe usually. It is better than the other way around.

      Having more space also gives the driver the to react.

      • lohky@lemmy.world
        link
        fedilink
        arrow-up
        1
        ·
        2 months ago

        Oh I’m not saying anything against it! I love that it leaves as much space as it does. Sometimes I just have to give it a little umpf to pass a semi because it sees the car waaay ahead and slows down.

    • Zombie@feddit.uk
      link
      fedilink
      arrow-up
      14
      ·
      2 months ago

      “Only a fool breaks the 2 second rule.”

      I was taught to repeat that phrase, at a normal steady pace, when I saw the back of their car go past something, to use as a marker (a signpost, the end of one of the lines on the road, whatever).

      If you finish the phrase after the front of your car has gone past the same marker, then you don’t have a big enough braking distance and need to ease off a bit.

      • Ibaudia@lemmy.world
        link
        fedilink
        English
        arrow-up
        1
        ·
        2 months ago

        My brother in law does this. Gets so close that you can’t see the rear tires of the car ahead, going 80+ mph. He’s been in multiple wrecks, including one where he totaled his custom BMW and almost died. He blamed the other driver (somewhat reasonably, they were drunk, but he was driving like a psycho), and refuses to change any of his driving habits.

        He also used to street race in Florida, with his family in the car. No, they did not consent to it, they’re just too scared of him to say anything.

  • Ravi@feddit.org
    link
    fedilink
    arrow-up
    16
    ·
    2 months ago

    The simplified distance rule we learn in europe is: half your speed (km/h) in meters or as an equation, v/2000. E.g. you drive 120km/h, keep 60m distance.

    • toynbee@lemmy.world
      link
      fedilink
      arrow-up
      6
      ·
      2 months ago

      In the US, usually it’s one car length per 10mph.

      Probably not much more intuitive than yours, but less math required on the fly.

      • Ravi@feddit.org
        link
        fedilink
        arrow-up
        2
        ·
        2 months ago

        Tbh the math required is pretty similar, I just divide the speed by 2 and am done.

        • toynbee@lemmy.world
          link
          fedilink
          arrow-up
          6
          ·
          2 months ago

          That’s very reasonable if you’re accustomed to operating in metric … Which we all should be, but here we are.

            • toynbee@lemmy.world
              link
              fedilink
              arrow-up
              8
              ·
              2 months ago

              Ah, that could be interpreted at least two different ways. I have a suspicion of how this conversation will go, but I’m interested to find out.

              It’s my opinion that the metric system is superior to the imperial, so we should all be primarily exposed to the superior system. Some may disagree and I won’t claim that I’m objectively correct. No worries if you disagree - regardless of my opinion, the imperial system is what I’ve been exposed to and what I use.

              Alternatively, the statement might be interpreted as “you should be familiar with the metric system even if you reside in a country where it’s not the primary system.” That’s probably less true - while it might behoove one to be familiar with the metric system, I don’t blame the individual for the limitations placed on them by the government, regardless of what’s better.

              If you have a third interpretation, it’s probably not what I meant, but I would be interested in hearing it.

    • faercol@lemmy.blahaj.zone
      link
      fedilink
      arrow-up
      1
      ·
      2 months ago

      In France the way we learned is (for the highway at least)

      • 110km/h: 5 small markings between you and the other car
      • 130km/h: 2 large markings
    • Cagi@lemmy.ca
      link
      fedilink
      arrow-up
      2
      arrow-down
      2
      ·
      2 months ago

      I just leave enough room to come to a stop in the gap between us.

      • Ravi@feddit.org
        link
        fedilink
        arrow-up
        4
        ·
        2 months ago

        That’s the underlying reason to keep distance ofc. The rule of thumb gives you an easy to calculate solution to how far that approximately is.

        • Cagi@lemmy.ca
          link
          fedilink
          arrow-up
          2
          arrow-down
          2
          ·
          edit-2
          2 months ago

          I don’t need math for this. Once you have a feel for your car you can just visually gauge it in an instant.

          • Fuzzy_Red_Panda@lemm.ee
            link
            fedilink
            English
            arrow-up
            3
            ·
            edit-2
            2 months ago

            Judging by how close people follow me on the Interstate, I have a feeling most drivers think this but only a small percentage can do it effectively.

            And judging by how close 9 out of 10 pickup truck drivers follow tailgate me on the interstate even when I am doing 10-15 over, I have a feeling most don’t care and would prefer to run me over in their lifted Rams and SuperDutys.