I will give you some examples which might help you.
1. whenever you are behind a taxi driver, always expect him to suddenly do a lane change, park on the roadside to pick a customer, etc. so KEEP A SAFE DISTANCE from him, and be prepared to brake anytime.
2. Whenever you see ahead that a car is waiting for you to pass so that he/she may enter the road from the service road on your right side, expect they will jump onto the road suddenly, forcing you to a sudden brake. so always expect that in advance... :-)
cheers mate.