3 ms·
The UK historically has lots of roundabouts, the design guidelines are here : https://www.google.com/url?q=https://trl.co.uk/uploads/trl/documents/PPR206_secure
by ajb 5y ago
The UK historically has lots of roundabouts, the design guidelines are here : https://www.google.com/url?q=https://trl.co.uk/uploads/trl/documents/PPR206_secure.PDF&sa=U&ved=2ahUKEwjZ-ua4_5b3AhXAQEEAHR1_AF4QFnoECAoQAg&usg=AOvVaw0ma_Cnbl_N5_1ZJ4h0doaH https://www.google.com/url?q=https://trl.co.uk/uploads/trl/d...
Basically they recommend 28m diameter if you are going to have a central island, otherwise it should be a mini-roundabout (capable of being driven over)
- alistairSH 5y agoI’ll add that in my family’s home town (farming town in Perthshire) in Scotland, there are mini roundabouts that are just a spot of white paint in the middle of the intersection. It works fine.