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John Rowland · April 20th 07, 03:16 PM posted to uk.transport.london

wrote:

I guess a head-on crash and subsequent fire/smoke is rather more
dangerous in a tunnel under the Thames than on the average street.

Also, bi-directional tunnels fill with pollution, whereas one-way traffic
tends to pull the fumes through.

It's about time they did something about Rotherhithe Tunnel, I think every
trip through there shortens your life by more than the time you save by
using it.