• There are quite a few 20 mph roads near me where the only incentive to slow down is to avoid being caught be a speed camera.

    The roads are wide and straight for long stretches, and going at the 20 mph limit just means you become an obstruction for the rest of traffic, even buses and lorries.

    The design of the road and posted speed limits are sending mixed messages.

    • There’s a concept in road design that says the engineer must first determine the design speed, which is basically how fast they want traffic to be able to flow. This part of the process is generally not part of any public hearing or put to a vote by public officials - it is just decided on and then they move on to the next step.

      There’s also a prevailing concept in road design that seems to indicate that high traffic speeds are a design issue, but low speeds are an enforcement issue. The road is designed to accommodate the highest amount of traffic anticipated in the future without really thinking about if that’s even a good fit for the area.

      Once the road has been built to exacting standards (which means it is far too wide and flat,) the city steps in and slaps a speed limit on it, often at odds with the design speed.

      When residents get worried about all the speeding cars, they petition the city for a traffic study to see if anything can be done. The engineers conducting the traffic study determine that the road is capable of handling higher speeds than the current limit, and so to cut down on speeding the recommendation is to increase the posted limit.

      It’s amazing to me how much influence the engineering team has on the design with basically no accountability. You can try to reduce speeding by putting up speed traps and police patrols, but at the end of the day people will drive as fast as they are comfortable with and that is often a result of the design of the road they are driving on.

    • Yea around here we have 4 or more lane highways with 60mph speed limits. You could almost double that safely if people actually used the lanes properly when not passing. Instead we have to deal with a mix of assholes going all different speeds trying to get around the people going 60 in the left lane and god help you of there’s a cop around.

      • Speaking as a person who does the limit (65 locally) in the right lane, sometimes the second to right lane in case there’s a lot of entering/exiting traffic… 120mph? What? The fuck?

        Humans aren’t designed to react to things at that speed. You need insane following distances to drive that speed safely. With all that extra following distance you don’t get much more throughput (vehicles per unit time). But what you do get is a ton more fatalities, because at that speed, when you meet stationary objects, all you can do is hope you had your affairs in order. No amount of crash safety tests help there.

        I gotta say, that if you’re the person who’s so frustrated about people driving the speed limit on a highway, you’re the asshole. Like yeah, sure, they should be in the rightmost lane practicable. That’s annoying, but it slows you down by a few mph for a minute or two and that’s it.

        If you want to move at 120+mph safely to your destination, take high speed rail. If you don’t have that in your region, start complaining.

        • Honestly I was thinking more like 100mph. I can pretty easily do 90+ on the roads around me when the roads clear without issue. I don’t get pissed at people for doing the speed limit. I get pissed at people that don’t use lanes properly and tailgaters. If you aren’t passing you should be in the farthest right lane possible until you need to pass. It’s my belief that the people that jump on the highway and get 3 lanes over and just squat there not passing anyone that cause most traffic issues.

          • Honestly I was thinking more like 100mph

            I remember doing that for my first (and only) time on the empty highways outside Salt Lake City in the early morning. It was exciting to try but fully concerning. I couldn’t imagine doing that around other vehicles.

            It’s my belief that the people that jump on the highway and get 3 lanes over and just squat there not passing anyone that cause most traffic issues.

            I mean, I think it’s clear that those are the people who cause the most issues for people who want to break the speed limit. And I fundamentally don’t believe you have the right to speed on a highway, and shouldn’t complain about missing out on opportunities to speed.

            Like, I’m not saying left lane squatters are driving correctly, they should be over in the rightmost lane. But also all the other drivers, including you, should be going the speed limit. Why does one arbitrary rule about lane positioning matter so much to people, while the arbitrary speed limit is fine to ignore? Real talk: they’re both arbitrary rules. If you’re breaking the speed limit: SHUT UP about the lane squatters.

            • It’s not equal though. Speed limits at least on the highways around here are set way lower than what is actually safe so of course people will ignore them. As long as they’re being safe (not tailgating, passing on the left, using turn signals, etc) they’re not affecting anyone else. If you’re squatting in a passing lane then you are actually impeding other traffic. If the speed limits were actually appropriate I would agree with you

              • “Impeding traffic” is quite the euphemism for “forcing people to slow down and drive the speed limit.” Call it what it is, a mild inconvenience that you wouldn’t even experience if you were following the rules that you’re upset about people breaking!

                And the people who are “speeding but still being safe” do impact others too. It makes it much more dangerous for drivers doing the limit to merge into the left lanes in case of stopped vehicles, slow trucks, and merging traffic.

                • Again, the speed limits usually aren’t appropriate for the highways they’re applied to so they don’t make sense unlike rules regarding lane usage. If they did I wouldn’t be complaining. It’s also not anyone besides law enforcement’s job to enforce them. By doing so you are creating an unsafe situation by packing all the traffic together.

                  If you need to merge into the left lane you simply wait for the faster traffic to go by. Are you suggesting that it’s dangerous to cut people off? Because yea, it should be.

    • I can’t really make sense of what you’re saying. If the road is straight and wide but also has a low speed limit, that’s not sending mixed signals. Rather, it’s suggesting that you should drive slow even though your instinct tells you that you could drive quickly, presumably because there are either obstacles creating blind points that could lead to pedestrian or bicycle involved accidents, small children playing nearby, or cars turning onto or from side roads that you might strike if you’re driving at the speed that your gut tells you is safe.

      In other words, you shouldn’t trust your gut when deciding how fast is safe on a road because your gut is often mistaken about the finer points of road design.

      Also, you wrote that a slow driver would be an obstruction to other vehicles including trucks. I think you were wording that as a bad thing, but in reality it’s a good thing. One reasonable driver can force a dozen bad drivers to slow down.

  • I think a large part of it is inappropriately making 30 mph areas 20mph and also poor enforcement.

    I live on a long wide 20mph road and I can’t stand the people going at 40, 50 or even 60 or 70 mph at times. But I don’t think my road should have been 20mph, it should have been 30mph. It seems it was easier to stick some 20mph signs up to say “we’ve done something” as a way of discouraging some people going at more rediculous speeds and hope most go at 30mph.

    Instead what was needed was actual investment in the road - speed bumps, narrowing the road with choke points and passing points, physical rather than painted cycle lanes - that kind of thing.

    Fortunately after years of pressure our road is now going to be in a LTZ (Low Traffic Zone). Both ends of my own long road are blocked off to allow pedestrians and cyclists only through, and my main road is being split into 3rds with X-junctions being turned into filters(Instead of X it’s now > and < with no connection). If you’re driving you can only turn into one side street while cyclists and pedestrians can pass through as normal. We’ve had a trial for a while and it’s been very effective - my whole block has been split up with filters so you can’t use it to pass through to reach the main roads around it - this has stopped the arseholes using my road as a shortcut and speeding at 60 mph.

    People are still going at 30mph but the twisting and turning through the block means you can’t really get up to anything more than that and also unless you’re going to a house in the block it’s pointless to even enter.

    So while I abhor speeding, I would argue these stats reflect bad road management - over relying on 20mph speed limtis as a cheap alternative to actual road management and redeisgns which are expensive (and difficult in many parts of the UK with lots of very old and narrow streets inherited from previous eras).

  • Way too many people are speeding where I live too and I partly blame the road design as well. I’ve seen many places in Denmark where I live that they at some point reduced the limit from 60 to 50 or from 50 to 40 kmh with no modifications to the road design or obvious reasons like schools or crossroads. Or similarly you are driving along at 80 and then the limit changes to 60 but the road looks the same. I know it’s usually because of safety or more commonly noise pollution or hidden sideroads. This doesn’t make sense intuitively while driving because the road design signals higher speed than allowed. It’s still no real excuse for driving too fast but I think it could solve a lot of the issue with better road design like “not just bikes” are also preaching in his videos

  • In the US speed limits are set by 85% of traffic speed on a road. So if the road was set for 30mph, and then you changed it to 20MPH with no other changes, you will immediately get 85% of drivers breaking the “limit.”

    Another way to say it is that UK’s department for transport has incompetently designed 85% of their 20mph roads.

  • I believe it 100%.

    I started riding with a Garmin bike radar and installed an app that tells me exactly how fast a car is going when it passes, and the majority are over the speed limit.

    Just the other day, in a 60 km/h zone, I clocked two cars going 125 km/h.

    If I thought for a second that police would charge these drivers using photo/video evidence, I’d fork over the $500 to get the radar with a camera built-in and report each and every speeding driver that passes me.

    •  figaro   ( @figaro@lemdro.id ) 
      link
      fedilink
      English
      31 year ago

      Same. Speeding tickets are so fucking expensive where I live. Guaranteed to be at least $300 at a minimum. I can’t afford that, so I barely go over to mitigate the effect of being the slowest driver on the road. In general though, idgaf.

      I also drive a Prius, so it’s at least somewhat expected ha

        • What if I don’t drive at all? Why should we accept people like you being infinitely more likely then me to kill someone with a car? Where is the limit? Why can’t we just make all speed limits zero?

        •  grue   ( @grue@lemmy.ml ) 
          link
          fedilink
          4
          edit-2
          1 year ago

          Nobody cares about your condescending non-solution that ignores human nature and is therefore worthless.

          Traffic engineers have to design for the reality of how people actually act, not some theoretical Platonic ideal of how they “should” act.

          Edit: that first sentence is harsher in tone than @derpoltergeist@col.social deserved, in retrospect. I’m not going to rewrite it because I still mean what I wrote, but please treat it as being addressed towards people who make that sort of argument in bad faith instead of at Pablo. (Sorry, I guess I’ve still got some leftover cynicism from Reddit.)

    • That soudns great. But why spend that money on traffic calming? Let’s just use that money to install additional speed-camera’s and build more roads that encourage more speeding. Revenue generation must be priority number one for every government!