Safe Driving Practices and Defensive Driving
Driving to Avoid Trouble
Defensive driving is the habit of assuming other drivers will make mistakes and leaving yourself room to react. The central technique is the three-second following rule: pick a fixed object ahead, and when the vehicle in front passes it, count three seconds before you reach it. Add a second for rain, a second for darkness, and more for heavy loads or poor visibility.
Space and scanning keep you out of trouble. Maintain a cushion on all sides, avoid lingering in others' blind spots, and scan 12–15 seconds ahead. Check mirrors regularly and signal before every lane change. The Smith System summarizes this as: aim high in steering, get the big picture, keep your eyes moving, leave yourself an out, and make sure others see you.
Distraction and fatigue are tested heavily. Texting, eating, and adjusting controls all pull attention from the road. Drowsy driving impairs judgment like alcohol; the only fix is to stop and rest, not to roll down a window. Aggressive driving - tailgating, cutting off, and road rage - should be met with disengagement, not retaliation.
Traps to Watch
Questions often ask for the safest response, not the legal one. For example, when someone tailgates you, the safest response is to increase your own following distance ahead so you can brake gradually - not to brake suddenly to "teach them a lesson." Another trap: "right of way" questions where the answer is to yield even though you were correct. Also watch for questions about headlights - they should be on in rain, fog, and at dusk, not just at night.
Rule of Thumb
If you can't stop within the space you can see, you are driving too fast for conditions.