## 4.6 – Use of Brake-door Interlocks 

Urban mass transit coaches may have a brake and accelerator interlock system. The interlock applies the brakes and holds the throttle in idle position when the rear door is open. The interlock releases when you close the rear door. Do not use this safety feature in place of the parking brake. 

1. Name some things to check in the interior of a bus during a pre-trip inspection. 

2. What are some hazardous materials you can transport by bus? 

3. What are some hazardous materials you can’t transport by bus? 

4. What is a standee line? 

5. Does it matter where you make a disruptive passenger get off the bus? 

6. How far from a railroad crossing should you stop? 

7. When must you stop before crossing a drawbridge? 

8. Describe from memory the “prohibited practices” listed in the manual. 

9. The rear door of a transit bus has to be open to put on the parking brake. True or False? 

These questions may be on your test. If you can’t answer them all, re-read Section 4. 

## Section 4 Test Your Knowledge 

