I dislike this design, which basically functions as one GSJ, with capacity to match, but which involves a lot of infrastructure and expense so looks like it achieves more. Much better is the version where the link roads join directly to the mainline, effectively turning it into one and a half GSJs. Here's an example on the A24: https://www.google.com.au/maps/@51.0654 ... a=!3m1!1e3 Unfortunately this is deprecated as part of the current DMRBs war on multiple entries and exits.Peter Freeman wrote: ↑Thu Sep 08, 2022 07:30Yes, similar in principle. Exactly the same distance between the roundabouts, and use of C/D roads. But those roundabouts are more UK standard, and are bigger, with more lanes. And despite similar proximity to housing, etc, the A690 vibe is minor rural HQDC rather than the built-up urban style of Armadale Road.Bryn666 wrote: ↑Wed Sep 07, 2022 19:10 The duck-n-dive element seems to be lifted from the A690 here https://goo.gl/maps/rDbvpKLd9K2FqyQp9
The UK road that this one most reminds me of is the A50 entering Stoke, westbound, between those vertical brick retaing walls for a mile or so. Not the same, but still that urban, bricky, comfortably-confined feeling.
The Perth and A50 examples do at least have the excuse of not having space to do much more.