OS 1:250,000 modern layers

[Big L]

There’s loads of missing roundabouts. Locally, A34 just north of Stafford, A34/A513 in Stafford, 1 of the 3 on B5012 in Penkridge, B5013 in Uttoxeter by the A518 junction.

[Steven]

Exactly what updates does this mapping receive each year? Within a minute I spotted two new missing roundabouts on primary routes which have been there for at least a couple of years. One is on the A449 on the northern edge of Penkridge and the other is on the A51 at Rugeley where the power station was.

As a general rule, roundabouts in urban areas are often missed out as part of the generalisation process, especially when they're with unclassified or Class III roads; and always when they're with roads that aren't important enough to appear - unless the shown road is a dual carriageway. They also don't show mini-roundabouts, so the A34/A513 ones mentioned wouldn't be expected to appear. They're simply just not important enough at this scale - but as it's generalised data, there are always exceptions that slip through.

If you want more detail, you have to up the scale - but OS don't release Landrangers as OpenData.

[Truvelo]

I think the A34/A513 roundabout he mentioned was on the north side of Stafford at Mustang Drive. This is on a dual carriageway.

[Steven]

I think the A34/A513 roundabout he mentioned was on the north side of Stafford at Mustang Drive. This is on a dual carriageway.

as it's generalised data, there are always exceptions that slip through.