Driving in Penang, you always need to anticipate bikes appearing out of nowhere from the side lanes. I always slow down for such roads due to past experiences. Even though some bikers are at fault, at least try to mitigate or avoid an accident.

And yeah, I'm not sure of other states, but I always see the BMW's and other luxury cars here never bother to put signal lights, cutting queues, speeding more often...not sure why that is.