4 ms·
That is approximately one for every 200km of road. Hardly seems like a lot.
by 7952 6y ago
That is approximately one for every 200km of road. Hardly seems like a lot.
- kitd 6y agoThey're focussed on the heavily used sections though, ie where they are more likely to be encountered. By that measure (kms driven), they're much more common.
- thinkingemote 6y agoI imagine that they would be on the motorways?
- tim333 6y agoCongested bits of motorway and multi carriageway roads often.