Re: [carfree_cities] Re: re:homezones
- Bill T replied:
>So until the carfree future dawns gettingI'd check with ITDP in Victoria for data on pollution-vs-speed
>traffic slowed down for the reason it cuts pollution (but I dont
>know if it does or not!?) could get some people started cycling and
>growing towrds carfree advocacy.
data. Many of the studies will be assuming that lane additions
will reduce congestion (false) and so also reduce pollution
(thus also false). The real question that needs answering here
is whether or not cars moving at steady slow speed emit more
or less garbage than cars moving at steady higher speeds.
The question of cold-start pollution needs also to be taken
into account. Todd Littman runs ITDP and is likely to know about
this. I'd be very interested to know what you learn, but I'm
afraid that it won't support lowering speeds to lower pollution,
at least not directly. If it reduces total driving (likely), then
it would perhaps help, if the reductiion in driving were sufficient.
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J.H. Crawford Carfree Cities