I don't think you can say definitively which system is safer.
Roundabouts at low volumes have a good throughput; at high volumes,
less so. There are traffic systems in this country which combine the
best of worlds (^_^)
Roger
On 8/15/08, Judy Prince <[log in to unmask]> wrote:
> Re USA's preference for traffic lights rather than roundabouts, more of us
> may be disposed to BPPV (Benign Paroxysmal Positional Vertigo).
> Or we may have sussed that traffic lights yield fewer auto accidents.
>
> Surely credible studies have come up with which system's safer---and which
> permits a smoother and higher volume of traffic.
>
> I enjoy the roundabouts, a bit like a circus ride, and much more engaging
> than traffic-light waiting. But for those who don't know the signage well
> in advance, it's quite like the Hallowe'en "Funhouse" in a circus.
>
> 2008/8/15 Roger Day <[log in to unmask]>
>
> > Yep. Our single greatest contribution to road planning.
> >
> >
> >
> > I'm surprised that a forward looking nation like the USA hasn't copied
> > this great idea.
> >
> > Roger
> >
> >
>
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