There is a separate forum for Street Furniture (traffic lights, street lights, road signs etc).
Registered users get access to other forums including discussions about other forms of transport, driving, fantasy roads and wishlists, and roads quizzes.
Moderator: Site Management Team
Went to Rhyll and used the A55, and it was all clear with little traffic, yet this was a Saturday ! Clearly the month of the year has a huge influence !!. OK, I know you all know this anyway, but it meant our ride was enjoyable, rather than tedious. On the other roads, the storm had knocked down a lot of trees, so one had to drive cautiously at all times.
On the way back I noticed how the twilight last so long at this time of year. Why is this, anybody know ?
Twilight is longest close to the solstices (June (especially - by quite a margin) and December) and shortest around early March and October. Full answer requires spherical trig but in the summer after the sun sets it is moving "under" the pole rather than straight down. Something similar in December.
At this time of year, probably a clear horizon will have more to do with it.
If you're viewing from a vehicle doing 60mph on the A55, you lengthen the twilight by about 10% if going west, or shorten it if going east.