Chapter 7 - Bus Extrication

Question 1

There are four main classifications of buses:

Answer 1

> School Buses
Transit Buses
Commercial Buses
Specialty Buses

Question 2

In the United States, approximately ___ to ___% of all buses on the road are either Type __ or __

Answer 2

85 to 90%

Type C or D

Question 3

Smallest type bus; carries 10 to 20 passengers; entry/exit door aft of the front wheels; has driver-side door.

Answer 3

Type A

Question 4

____ - GVWR of more than 10,000 lbs

____ - GSVR of less than 10,000 lbs

Answer 4

Type A-1

Type A-2

Question 5

GVWR of more than 10,001 lbs; passenger carrying capacity of 16-24; Entry/Exit door aft of front wheel.

Answer 5

Type B

Question 6

Most common school bus; More than 10,000 lbs; No driver-side door; Entry/Exit door aft of front fender; 30-78 passengers; avgerage weight of 20,000 to 30,000 lbs

Answer 6

Type C

Question 7

Full size bus with “boxy” appearance; no driver-side door; Entry/Exit door forward of front wheels; authorized carrying capacity of 66 passengers.

Answer 7

Type D

Question 8

The body and chassis are formed as a unit.

Answer 8

Integral Construction

Question 9

The body and chassis are manufactures as seperate units and joined by the bus manufacturer.

Answer 9

Body-on-Chassis

Question 10

Finish panels of ___ gauge steel are typically mounted on the exterior and ___ gauge on the interior of the sidewall frame members.

Answer 10

20-gauge

22-gauge

Question 11

Formed rub rails (_____ inch wide) of ___ gauge steel run the full length of the sidewall.

Answer 11

4-3/4 inch

16-gauge

Question 12

One rub rail will indicate the _________; if a second rail is present, it will indicate the _________.

Answer 12

Seat Cushion Level

Floor Level

Question 13

Emergency escape hatches open fully to provide a clear opening of at least __ x __ inches

Answer 13

11 x 14 inches

Question 14

Structural members, acting as floor joists, are spaced as close as every ___ inches along the underside of the floor.

Answer 14

9 inches

Question 15

When open, school bus front doors typically have a horizontal opening of between ___ and ___ inches and a minimum vertical opening of approximately ___ to ___ inches

Answer 15

22 and 24 inches

68 to 72 inches

Question 16

Typical school bus windows open from the top down, providing an opening of approximately ___ x ___ inches, or one-half the total size of the window area.

Answer 16

9 x 22 inches

Question 17

Since 1977, school bus seat backs have been required to be of the high-back style ___ inches high.

Answer 17

24 inches

Question 18

School bus passenger seats may be equipped with lap style seat belts if mandated by local ordinances or state laws, but all Type ___ buses under ______ pounds GVWR must have lap belts.

Answer 18

Type A buses under 10,000 lbs

Question 19

The most common material used for transit bus floor decking is ____ inch plywood.

Answer 19

3/4-inch

Question 20

The fuel tank(s) on school buses, transit buses, and commercial buses may be as large as ____ gallons.

Answer 20

180 gallons