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The reduction from 30mph to 20mph in London is political CV padding and has had no real effect on outcomes. All based on Chinese whispers. Wouldn't be surprised

The reduction from 30mph to 20mph in London is political CV padding and has had no real effect on outcomes. All based on Chinese whispers. Wouldn't be surprised if your comment ended up as an original source in Islington's justification for some thing or other. It's that flimsy

stefan_ 4y ago
Average speeds in London are below 20mph. Accelerating absurdly overweight, overpowered cars to anything over 20mph in between stops at lights is just a moral hazard.
- easytiger 4y ago
  > Accelerating absurdly overweight, overpowered cars to anything over 20mph in between stops at lights is just a moral hazard. The level of absurdity in suggesting a moral element to driving a car at below 30mph just shows how fundamentally biased people have become about a normal part of everyday life. For whatever reason
  - stefan_ 4y ago
    I think you just don't know what that term means.
    - easytiger 4y ago
      Absurd
hgomersall 4y ago
If it doesn't it's because it's not enforced. It's irrefutable that vehicles moving at 20mph are less dangerous than vehicles moving at 30mph.
- easytiger 4y ago
  > If it doesn't it's because it's not enforced. It's irrefutable that vehicles moving at 20mph are less dangerous than vehicles moving at 30mph. Then make them drive at 1mph
FabHK 4y ago
The effect is huge. Energy goes up quadratically, so here (4->9) you have more than doubling. Stopping distance goes up quadratically (well, due to reaction time there is a linear component in there as well, but still). And if there is a sudden obstacle that you can just avoid hitting going 20mph initially, you'd hit it with 22 mph if you're going 30 mph initially (assuming no reaction time and constant deceleration). I submit that that's a massive difference: hitting a child not at all or with 22 mph.
- easytiger 4y ago
  Things can be quantifiably described as "doubled" without that having any real world impact. In my experience the people supporting these measures are adopting them not because they care about safety at all, but have another agenda.

stefan_ 4y ago

Average speeds in London are below 20mph. Accelerating absurdly overweight, overpowered cars to anything over 20mph in between stops at lights is just a moral hazard.

easytiger 4y ago
> Accelerating absurdly overweight, overpowered cars to anything over 20mph in between stops at lights is just a moral hazard. The level of absurdity in suggesting a moral element to driving a car at below 30mph just shows how fundamentally biased people have become about a normal part of everyday life. For whatever reason
- stefan_ 4y ago
  I think you just don't know what that term means.
  - easytiger 4y ago
    Absurd

hgomersall 4y ago

If it doesn't it's because it's not enforced. It's irrefutable that vehicles moving at 20mph are less dangerous than vehicles moving at 30mph.

easytiger 4y ago
> If it doesn't it's because it's not enforced. It's irrefutable that vehicles moving at 20mph are less dangerous than vehicles moving at 30mph. Then make them drive at 1mph

FabHK 4y ago

The effect is huge. Energy goes up quadratically, so here (4->9) you have more than doubling. Stopping distance goes up quadratically (well, due to reaction time there is a linear component in there as well, but still). And if there is a sudden obstacle that you can just avoid hitting going 20mph initially, you'd hit it with 22 mph if you're going 30 mph initially (assuming no reaction time and constant deceleration). I submit that that's a massive difference: hitting a child not at all or with 22 mph.

easytiger 4y ago
Things can be quantifiably described as "doubled" without that having any real world impact. In my experience the people supporting these measures are adopting them not because they care about safety at all, but have another agenda.