Half a croissant, on a plate, with a sign in front of it saying '50c'
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Elastic speed camera

Tolerance according to environmental conditions.
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** Note: I'm neither condoning nor condemning speeding in this idea, simply presenting a way to make existing technology fairer. **

Because speed cameras don't have the ability to exercise discretion, UK agencies have announced that they're changing the way speeding motorists are fined. Instead of a simple fine if you're over the limit, the new fines will be proportional to the driver’s excess speed.

Wouldn't it be better to build "discretion" into the machines? A timer could easily make the machines trap motorists at (say) 33mph during the school run, but 40mph outside of school run hours. A sensor could identify poor visibility, or wet conditions, and reduce the machines tolerance accordingly.

Fishrat, Sep 01 2004

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       This would also be useful in countries like France, where the speed limit drops when it's raining.
oneoffdave, Sep 01 2004
  
      
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