CDL School Bus (Section 10)
Terms in this set (29)
Where are the danger zones?
30' from the front bumper, 10' from the left and right sides, and 10' behind the rear bumper.
What are the outside left and right side flat mirrors used for?
To monitor traffic, check clearances adn students on the sides and to the rear of the bus.
Blind spots below and in front of each mirror, and directly behind the rear bumper up to 400'.
How do you know if the outside flat mirrors are adjusted properly?
1. 200' or 4 bus lengths behind
2. Along the sides of the bus
3. The rear tires touching the ground
What are the outside convex mirrors used for?
To monitor the sides at a wide angle. Do not accurately reflect size and distance from bus.
How do you know if the outside convex mirrors are adjusted?
You can see:
1. The entire side of the bus up to the mirror mounts.
2. Front of the rear tires touching the ground
3. At least one traffic lane on either side
What are the cross view mirrors used for?
To see the danger zones directly in front of the bus not visible by direct vision, and to the left/right sides including the service door and front wheel areas.
Not an accurate size.
How do you know the cross view mirrors are adjusted?
You can see:
1. The front of bus from the front bumper at ground level to a point where direct vision is possible.
2. Direct vision and mirror vision should overlap.
3. The right/left front tires touching the ground
4. Area from the front of the bus to the service door
What is the overhead inside mirror used for?
To monitor passenger activity in the bus.
Blind spot behind drivers seat, and behind the rear bumper up to 400'. Use exterior side mirrors to monitor this area.
How do you know the overhead inside mirror is adjusted?
You can see:
1. The top of the rear window in the top of the mirror
2. All of the students behind you.
How far should students always walk from the bus?
What should you do with students in an emergency?
Keeping them on the bus is the best unless it's too dangerous.
When is evacuation mandatory?
- Fire or threat of fire
- Bus stalled on or adjacent to a rr crossing
- Imminent dange of collision
- Hazardous materials spill
Where should you position students in an evacuation?
- 100' off the road in the direction of oncoming traffic
- Upwind if fire
- 300' if hazardous materials
What is a passive rr crossing?
No traffic control device. You must stop. They have yellow circular advance warning signs, pavement markings and crossbucks.
What is an active rr crossing?
Traffic control device.
What does a rr advance warning sign look like?
What do pavement markings look like?
an "X" with the letters "RR" and a no-passing marking on two-lane roads. If there is a white stop line the front of the bus must remain behind it while stopped at the crossing.
What are crossbuck signs?
Mark a passive crossing. When the road crosses more than one set of tracks, a sign below indicates the number of tracks.
How do you approach a rr crossing?
1. Slow down and shift to a lower gear
2. Activate hazard lamps at 200'
What do you do at a rr crossing?
1. Stop 15'-50' away from the nearest rail.
2. Place bus in park (or neutral if manual)
3. Turn off radio and silence passengers
4. Open service door and window and listen
How do you cross a rr track?
1. Check signals again
2. Stop only before the first set of tracks.
3. Cross in a low gear. Do not change gears.
What do you do if the bus stalls on tracks?
Evacuate immediately. Move away at an angle away from the tracks and towards the train.
What buses are required to have anti-lock braking?
- Air brake vehicles built on or after March 1, 1998
- Hydraulically braked vehicles w/a gross vehicle weight rating of 10,000lbs or more built after March 1, 1999
How does ABS help?
Helps avoid wheel lock up and maintain control. You cannot brake faster, but can steer around an obstacle while braking, and avoid skids caused by overbraking.
How do you know if ABS has failed?
Yellow malfunction lamp. If it stays on you may have lost ABS, but still have regular brakes.
Will ABS prevent power or turning skids?
No. It only prevents brake-induced skids.
Will ABS shorten stopping distance?
No. It is an "add-on" and not a replacement for brakes. ABS only comes into play when a wheel would normally have locked up b/c of over braking.
What are strobe lights used for?
Used when you have limited visiblity.
How much of a tail swing can a bus have?