Speed limit for 'Pollution': Motoring Motoring Discussion forum

Motoring Discussion > Speed limit for 'Pollution'	Miscellaneous
Thread Author: Boxsterboy	Replies: 4

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Sat 24 Mar 12 21:19

Speed limit for 'Pollution' - Boxsterboy

Driving down the A1 into Paris this evening the speed limit was reduced to 110 kmh and then 90 kmh for 'Pollution'. The air looked the same as normal to me. I wonder if shops and offices are told to turn their lights and heat down or off as well, or do the French see the motorist as the same easy target that our politicians do?

This could be a sign of things to come. i.e speed limits to combat global warming.

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Sun 25 Mar 12 05:36

Speed limit for 'Pollution' - Auntie Lockbrakes

Presumably the logic is lower speed = lower fuel consumption and lower emissions? Wouldn't surprise me that Paris is polluted - I always see a huge brown haze over the city when driving in to the region, or even flying over, on a dry day. All though diesel engines y'see...

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Sun 25 Mar 12 11:58

Speed limit for 'Pollution' - swiss tony

>> Presumably the logic is lower speed = lower fuel consumption and lower emissions?

Surely, Lower speed means, lower gear + in area longer = MORE pollution?

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Sun 25 Mar 12 12:08

Speed limit for 'Pollution' - Lygonos

No.

Lower speed = more miles per gallon = less pollution over a set distance (to a point, I believe once you go below about 30-35mph fuel ecomony and emissions start to suffer in most cars).

I think the Greeks (forward thinking nation....) tried banning cars from Athens depending upon reg numbers - odd numbers one day, even numbers the next, etc.

All that happened was people bought a smokey old banger with the other plate so they could keep driving into the city = worse pollution.

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Sun 25 Mar 12 12:46

Speed limit for 'Pollution' - swiss tony

>> No.
>>
>> Lower speed = more miles per gallon = less pollution over a set distance (to
>> a point, I believe once you go below about 30-35mph fuel ecomony and emissions start
>> to suffer in most cars).

So, rather than a NO, that's a YES in answer to my comment.

Dunno if you have ever noticed but speed limits in towns is normally 30mph, or in some places 20mph.
Then you have 'traffic calming' that slows traffic even more....

And before someone else says it..... I do understand that excess speed in towns is dangerous to pedestrians and cyclists, but that is a different argument for lower speeds....

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