Here are a couple of snips from the St Philips Causeway area. This is very car friendly. It has dual carriageways with 50 mph limits, a bridge that bans pedestrians (who still walk along it) and the junctions are all roundabouts. Best of all, for a car, all the bikes are pushed out the way.
Here's one example, a bike junction that encourages bikes to turn off the approach lanes and go under an Heavy Goods Vehicle instead.
When the lorry clears, you can see that the 'approved' way to cross the road consists of trying to cross -with no right of way- the vehicles entering and exiting the roundabout. The best bit, a little green sign that says "cyclists please give way to pedestrians"
If you actually follow this signage, you switch from being a road vehicle with rights of way into not just a second class citizen -a pedestrian- but a third class one. Everybody cuts you up. Nice.
Furthermore, having explored all these back lanes, it slow and not that safe to zig-zag round behind the KFC drive-in restaurant, through the back of the showcase parking area and then up through Barton Hill. For an efficient commute, and indeed a good walk, the Saint Philips Causeway is more direct and faster. Possibly safer too, were it not for a 50mph speed limit, which creates two expectations from cars: (1) there are no bikes and (2) they can go at 50mph.
Perhaps dropping the speed to 40mph and making one lane each way walking/cycling would be a bike city improvement we could aspire to. Then again, probably not. With all the car showrooms round there, its our own little bit of Bristol - Car City.