A reflective orange triangle on the back of a vehicle indicates that:
- It is a slow-moving vehicle. ✓
- It is an ambulance.
- It is a school bus.
- The vehicle is broken.
Answer: A. It is a slow-moving vehicle.
The reflective orange triangle marks a slow-moving vehicle.
Why this is the answer
The handbook says this emblem is required on slow-moving vehicles, which it defines as vehicles built to run at no more than 25 mph. It also says the emblem may not be used on anything except a slow-moving vehicle or on stationary objects. That makes the triangle a warning about a vehicle traveling unusually slowly, not a symbol for an ambulance, a school bus, or a broken-down vehicle.
Why the other answers are wrong
- B. It is an ambulance. — The passages do not describe the orange triangle as an ambulance marking, and an ambulance is not defined as a slow-moving vehicle.
- C. It is a school bus. — The handbook ties the triangle to slow-moving vehicles, not school buses, and says the emblem is prohibited on anything other than such a vehicle.
- D. The vehicle is broken. — A broken-down vehicle would be stationary, and the handbook specifically says the emblem must not be used on stationary objects.
Remember it
Picture the triangle as a turtle shell: it tells you to expect a vehicle moving well below normal traffic speed.
Official handbook: Texas Driver Handbook (DL-7), Chapter 5: Signals, Signs, and Markers , p. 37