One of the main interesting things about bus lanes has always been that most drivers aren't really aware of the hours of operation, and so stick to the adjacent general traffic lane even out of hours. It's odd especially in view of the satnav boom, as you'd expect that kind of software to be programmed to tell people when they can drive in bus lanes. If drivers were aware, you'd obviously get less of that occasional aggressive driving.
As above, dropping in and out of bus lanes is hard work when you're driving. There's normally parked cars, bikes, stopped buses, etc in them so to progress you need to keep swerving in and out of them which requires much more effort than trundling along in one lane.
One of the main interesting things about bus lanes has always been that most drivers aren't really aware of the hours of operation, and so stick to the adjacent general traffic lane even out of hours. It's odd especially in view of the satnav boom, as you'd expect that kind of software to be programmed to tell people when they can drive in bus lanes. If drivers were aware, you'd obviously get less of that occasional aggressive driving.