Use your mirrors and check your blind spots. Don’t just pay attention to the cars and road in front of you — you should be scanning more-or-less constantly, using your mirrors to watch the cars on either side and behind you. However, every vehicle has blind spots — so know where yours are, and make allowances for those of other vehicles. Always check your blind spot by looking over your shoulder before turning or changing lanes. You could also consider getting a blind-spot mirror, but be aware that anything in it is much smaller than it appears.
Don’t block your vision — avoid putting decals on your windows or hanging dangling objects (like furry dice) from your rear-view mirror. Be wary of other drivers. When driving, you should never assume that everyone else on the road will act in a safe, responsible manner, or that they will react to a situation in the same way as you. As a result, you need to be alert and aware of your surroundings at all times, and be ready to react instantly to what’s going on around you. This is known as driving defensively.
Some specific bad driving practices to watch out for include: failing to use the turn signal, changing lanes unexpectedly, stopping suddenly, speeding, swerving and tail-gating.Driving in poor conditions requires you to be even more cautious than you normally would — you should drive slower than the speed limit, maintain additional space between your car and the car in front of you and be very careful around twists and bends.