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Comment by cuu508

2 days ago

> We are all making a continual and ongoing grave error

> Blindly translating those centuries of laws into rigid, free enforcement is a terrible idea for everyone.

I understand your point that changing the enforcement changes how the law is "felt" even though on the paper the law has not changed. And I think it makes sense to review and potentially revise the laws when enforcement methods change. But in the specific case of the 55 mph limit, would the consequences really be grave and terrible if the enforcement was enforced by a robot, but the law remained the same?

Any law, including a speed limit, has unforeseen consequences. In my part of the world, there is a 4km stretch of the road with good visibility, low pedestrian traffic, and which takes you either 10 minutes to go through if you follow the limits, or 3 minutes if you drive at +5km/h.

Other than lost time (which compounds, but also increases traffic congestion, so those 10 mins might turn into 20-25), the fuel use and pollution are greatly increased.

Interestingly, there are speed cameras there, and enforcement is not done on these slight violations: without this flexibility, I'd need to ask for traffic lights to be adjusted so they work well for driving under speed limits, and that is slow and an annoying process.

But without an option to "try", I wouldn't even know this is the case, and I wouldn't even be able to offer this as a suggestion.

Whether that accounts for consequences being "grave and terrible", probably not, but very suboptimal for sure.

> would the consequences really be grave and terrible if the enforcement was enforced by a robot

The potential consequences of mass surveillance come to mind.

  • OK, but that would be a consequence of the specific enforcement method, not a consequence the law becoming de facto stricter due to stricter enforcement.

Yeah, I'd have to go slower????

Anyway. I come from the UK where we've had camera based enforcement for aeons. This of course actually results in people speeding and braking down to the limit as they approach the camera (which is of course announced loudly by their sat nav). The driving quality is frankly worse because of this, not better, and it certainly doesn't reduce incidence of speeding.

Of course the inevitable car tracker (or average speed cameras) resolve this pretty well.

For one thing, the speed limit is intentionally set 5-10mph too low, specifically to make it easier to prove guilt when someone breaks the "real" speed limit.

  • https://en.wikipedia.org/wiki/Normalization_of_deviance

    While it is true that many people do speed, that doesn't make their speeding "the real speed limit".

    • Speed limit is only a proxy for your braking distance in case of emergency braking (at least in most cases, but also a proxy for bad road conditions in others): the point is to ensure safety, and not a particular speed.

      I've driven behind drivers driving 25km/h in a 40km/h area and not stopping for pedestrians at a crosswalk with right of way (if somebody jumped out elsewhere, they'd probably just run them over at 25 km/h), whereas I always do even if I am driving at 45km/h because my foot would be hanging over the brake near areas of low visibility (like intersections) or near crosswalks or with pedestrians near the road.

      Your braking distance is largely a function of your reaction time (attention + pre-prep + reflexes), and your car performance (tyres, brakes) on top of the speed, and speed limits are designed for the less than median "driver". You obviously have most of those under your control, but the speed is the easiest to measure externally.

      The obvious counter is that I could be even safer if I also drove at 25 km/h, but it would take me much longer, I'd hit many more red lights, so I might stop being so attentive because I am going "so slow" and taking so long (maintaining focus is hard the longer you need to do it).

      However, measuring individual performance is prohibitively expensive if not impossible (as it also fluctuates for the same person, but also road and car conditions), so we use a proxy like speed limit that is easy to measure.

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