We’re looking at temporary measures to allow for this whole “social distancing” thing and I’ve been asked about temporarily putting in 20mph limits in certain areas. Can someone refresh my memory in terms of illumination of these?

The Regs state that Diag 670 needs to be lit if it’s a terminal sign and on a trunk or principal route that it needs to be lit if there’s lighting present, but is that for all situations?

These signs are likely to be in place for 6 months-1 year (According to my boss) so would the same apply for this temporary situation?

At roadworks, temp speed limits don’t seem to be lit, although the temp limits I’ve seen are on rural roads and not taking a 30 down to a 20 limit.

Any information would be appreciated.