The Four-Second Gap at Dusk
It is 25 minutes after sunset. You are riding a motorcycle eastbound on a four-lane divided highway at 65 mph in the right lane. The speed limit is 65. You are following a pickup truck at about two seconds of following distance. The truck's taillights are on, but its bed is loaded with unsecured lumber that overhangs the rear. A light rain has just begun, and the pavement looks slick in patches. Your helmet visor is lightly fogged at the bottom edge. Traffic in the left lane is heavy and moving about 5 mph faster than you. You feel a slight chill and your fingers are stiff on the grips.
1. Evaluate the following distance and what you should change.
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Two seconds is too close here; open it up to at least four seconds.
- At 65 mph you travel about 95 feet per second. Two seconds is roughly 190 feet, which leaves almost no room to react and stop if the truck brakes or sheds lumber.
- Rain, slick patches, fogged visor, and cold-stiffened hands all lengthen your reaction time and reduce traction. Each factor argues for more space.
- A reasonable target in these conditions is four or more seconds, created by easing off the throttle rather than by braking hard on wet pavement.
- More following distance also gives you a better view around the truck and more time to see debris falling.
2. The truck's load is unsecured. What specific hazards does that create and how should you position yourself?
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Unsecured overhanging lumber can fall, shift, or strike you; do not ride directly behind it.
- Lumber can slide out the back, bounce, or swing if the truck brakes or swerves.
- Overhang means the load extends beyond the bumper, so your normal following position is closer to the hazard than it looks.
- Position offset to the left or right within your lane so a falling piece is less likely to hit you, while staying out of the fast-moving left lane until it is safe.
- If the load looks dangerous, drop farther back and consider exiting or changing lanes when clear rather than tailing it.
3. Can you move to the left lane to pass? Explain the judgment.
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Only if you can do it smoothly and legally; heavy faster traffic and wet pavement make it risky right now.
- The left lane is moving 5 mph faster and is crowded, so a pass requires a clear gap and a speed advantage you may not have.
- Wet pavement and a fogged visor reduce your ability to check the blind spot and react; a quick lane change is riskier than usual.
- If you pass, signal early, check mirrors and blind spot, and make one decisive move; do not linger beside the truck where falling debris could reach you.
- If no safe gap exists, the better choice is to increase following distance and wait.