On 20/02/2018 09:50, Nightjar wrote:
snip

Removing the centre line is only proven to reduce speeds, by around
5-9mph, where the limit is 30mph or less. On rural roads, the presence
of a centre line is useful as it shows that the road is at least 5.5
metres wide.

also useful at night to show where the road is going - especially for
drivers with older cars/eyes

--
Robin
reply-to address is (intended to be) valid