Looking at this view of a cyclist going along a bike lane in Feeder road, you'd think that the car was deliberately about to run over this bike
But they aren't -they are just driving along stuck behind a bike. Why go along halfway in the bike lane?
Well, lorries like this may have something to do with it.
The only safe place for a car is half in the bike lane. So of course they do it. They'd do it even if it had stricter markings than the dotted hint of a bike lane here.
It's not exactly clear what this bike lane does. It does hint to cars that they should expect bikes, but since motor traffic was moving up and down here fast, it's not clear that its a safe place to ride. What it does do is discourage bikes from pulling out just enough to completely block cars from behind getting past, and stop bikes from getting lined up to do a right turn into the (signed) route under the Saint Philip's causeway. So maybe it's there to keep bikes under control while adding to the quota of bike lanes in the city. A double benefit then, for Bristol.