There is camera, just not all buses. It also depends on the bus
captain's mood. If he is irritated enough by the persistent car
that blocks him, he will do it. All he needs to do is to press a
button to record the scene unfolding in front of the bus. The time
and date will be automatically recorded, followed by a 5 to10 min
clip (something like that as evidence). The video will go to LTA,
and summons are normally within 2 weeks or so. Just this year, my
buddy kenna. $130 is not cheap to pay.
Else, how else can pple be so diciplined to keep clear of bus
lanes.