A vehicle ahead shows an orange and red triangle on its back. What does the marker tell you?
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A.
It marks a slow-moving vehicle, often one traveling 25 mph or less Correct
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B.
It is carrying an explosive or hazardous load
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C.
It is a school bus preparing to stop for children
The answer is "It marks a slow-moving vehicle, often one traveling 25 mph or less"
The orange and red triangle marks a slow-moving vehicle. The manual gives road maintenance vehicles, which usually travel at 25 mph or less, as one example. The hazardous-load choice catches drivers who read any red-and-orange warning on a truck as a hazmat cue, a habit borrowed from the diamond placards fuel and tanker trucks carry.
The traps in the wrong answers
B. It is carrying an explosive or hazardous load
Hazardous loads travel under a diamond-shaped placard, not the orange and red triangle. This answer treats any red-and-orange warning on the back of a truck as a hazmat cue, a habit borrowed from the diamond placards fuel and tanker trucks carry.
C. It is a school bus preparing to stop for children
School buses signal stops with flashing red lights, not with an orange and red triangle. This answer reaches for the school-bus stop rule on any red-and-orange marker because the school-bus warning is the vehicle-specific rule drivers rehearse first.
This question tests your knowledge of Sharing the Road in California. Source: California Driver Manual, "Slow-moving Vehicles," p.45..
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