ND CDL Passenger study materials
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Wet Two-Lane, a Tailgater, and a Sick Passenger

ND CDL Passenger · Put your knowledge to work in context.

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Wet Two-Lane, a Tailgater, and a Sick Passenger

You are driving a 40-foot coach eastbound on a two-lane North Dakota highway at 55 mph with 38 passengers. It has rained for an hour; the pavement is wet, the shoulders are gravel, and there is no guardrail. Dusk is about 20 minutes away and this stretch is posted for deer. You are 25 minutes behind schedule. A pickup has been tailgating you at roughly one car length for the last three miles. A passenger in row 12 has vomited and is pale; her companion asks how long until the next town, 18 miles ahead. Another passenger has pressed the stop-request button three times asking for a bathroom stop now. Your four-second following gap has shrunk to about two seconds because you slowed for the curve ahead.

1. How do you manage speed and following distance given the wet road and the tailgater? Use the numbers.

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At 55 mph you cover about 81 feet per second, so a four-second gap is roughly 320 feet and the two-second gap you now have is about 160 feet.

  • On wet pavement, total stopping distance from 55 mph is commonly estimated at 300 feet or more once you count perception, reaction, and reduced friction - before you count the deer and the curve. A 160-foot gap means you cannot stop for a hazard ahead. The pickup behind you is not the problem; the space in front of you is.
  • Rebuild the gap gradually: ease off the throttle. Do not brake-check. A hard brake with a tailgater one car length back turns his mistake into a rear-end collision with 38 people aboard.
  • Use the turnouts: signal early, slow gradually, and let him pass. If he will not pass, hold a speed that lets you stop within the visible distance, even if that is below the posted 55.
  • Enter the curve below the posted speed. Wet gravel shoulders give no recovery room and there is no guardrail; if you drift wide, nothing catches you.
  • Deer at dusk means covering the brake and scanning the shoulder, not just the lane ahead.

Being 25 minutes late does not change any of these numbers. Speed buys minutes; it does not buy stopping distance.

2. The passenger in row 12 is pale and vomiting. Do you stop, and if so, where? Show how you decide.

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She needs a stop, but the question is where, not whether.

Get information first. Is she conscious and responsive, breathing normally, able to sit upright? Vomiting with pallor can be motion sickness, but it can also be a cardiac or neurological event. Ask about chest pain, dizziness, numbness, and medications.

Do not let her lie in the aisle or sit in the stairwell. If she is stable, relocate her to a seat near the door with a companion, give her a bag and water, and keep her in view.

Weigh the distance. The next town is 18 miles - roughly 20 minutes at this speed on this road. That is a reasonable window if she is stable and not if she is deteriorating. Reassess every few minutes rather than deciding once.

Where to stop matters. With no shoulder, no guardrail, gravel edges, dusk, and deer, a bus stopped half on the roadway with 38 people aboard creates a second emergency. Use a turnout, a field approach, or the next town unless the situation is immediately life-threatening.

Escalate on change: unresponsiveness, chest pain, or trouble breathing means stop at the first safe spot, call 911 with your location and mile marker, and do not move her more than necessary. A stable patient and an unstable one look alike at first - the reassessment is the decision tool.

3. The other passenger keeps demanding a bathroom stop now. What does and does not justify taking a 40-foot bus off the road at this moment?

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Separate the two lists, because the exam tests whether you can tell a preference from an emergency.

Justifies stopping immediately, even on a poor shoulder:

  • Anyone unresponsive, in respiratory distress, or with chest pain.
  • Fire, smoke, or a burning smell; an overheating tire or brake; a dragging part or fluid loss.
  • A brake or steering problem - a soft pedal, a pull, or a sudden vibration.
  • A passenger who is a danger to others, or a fight you cannot control from the driver's seat.
  • Any condition where you cannot hold your lane or maintain space.

Does not justify stopping on a narrow shoulder at dusk:

  • A late schedule.
  • A complaint about temperature.
  • A request for a cigarette break.
  • The stop-request button pressed repeatedly.

The passenger asking for a bathroom stop gets an honest estimate and the next safe facility - not a stop in a curve with traffic passing at 55.

If you do stop, get as far right as the surface allows, hazard lights on, and set warning devices if any part of the bus is on the roadway. A stopped bus full of people is itself a hazard; protecting it is part of the job, not an interruption of it.