another good point here, that guy in front of you must have his guilty conscience pop up at the moment he saw the police car. malaysian like that, they tend to respect the law when law-enforcer is in front of them, if not, whatever wrong they do is not wrong at all, look around you to see these behaviour. if you saw police on the road also what the heck, just drive normally and within the speed limit, nobody is going to kacau u then
what we can usually see is, if there's one patrol car on the road, everybody will be behind that car, however long it may take, even on a double lane road...huh malaysian
Not just a Malaysian mentality but apply to others as well. As an example, I have seen it often in Australian roads.
Drivers tend to react abruptly when they see a cop car.
Most drivers may be driving normally within regulations but when suddenly a cop car appears, many drivers, for some illogical reason, start to panic and second-guess themselves about whether they are driving within the rules.
The common reaction is to suddenly go conservative and slow down more than necessary just to be on the 'safe' side...which ironically is really not safe at all because if you slow down abruptly for no reason, you will play havoc with the cars which are following you.
It's indicative that many people just have no confidence with their driving because if you are self-assured and aware of your surroundings, you would not do such things. I make a point to anticipate such things when patrol cars are in the proximity.
Most patrol cars tend to go slower than the speed limit anyway because they are on the lookout during the patrol. So there's really no reason for drivers to arrange themselves into a convoy and fall in behind a cop car like a parade, unless it is a police escort telling you to give way.
Other than that, I hardly yield to patrol cars when I have no reason to do so. If the cop is slow, turn on your indicator and overtake him.