A bus driver should choose a safe driving speed, primarily based on

  1. the number of passengers.
  2. the schedule.
  3. the road conditions. ✓
  4. the condition of the brakes.

Answer: C. the road conditions.

A bus driver should choose a safe driving speed primarily based on the road conditions.

Why this is the answer

The handbook links safe speed to the surface you are driving on. It says most skids happen because a driver is going too fast for road conditions, and it advises reducing speed on slippery roads and slowing down on rutted snowy roads. That makes road conditions the primary thing to match your speed to, rather than passenger numbers, the schedule or the brakes.

Why the other answers are wrong

Remember it

Match your speed to what is under your tires, not to the clock or the passenger count.

Official handbook: Official MTO Truck Handbook, Driving at night and in bad weather – Skids

Explanation drafted with AI (deepseek-flash) from the official handbook passage cited above, then checked automatically and by a second model on 2026-10-23. Always confirm with the official handbook.