Driving can become second nature and risks becoming monotonous, allowing your concentration to slip. When you become too comfortable, you can become over-confident, fiddling with the car stereo or eating, for example. To maintain your concentration levels from time-to-time plan different ‘what if’ scenarios. These don’t have to be too distracting, but should introduce an element of risk that could potentially happen and need to be accounted for.
Standard examples include asking what would happen if the bicycle attached to a roof rack of a car in front suddenly becomes loose. What about if the lorry to the left of you suddenly decided to pull into your lane without warning? By giving yourself little dilemmas to solve, you are keeping up a higher level of concentration and this could prove invaluable if a real problem or potential incident presents itself.