Chapter 7 - Bus Extrication Flashcards
There are four main classifications of buses:
> School Buses
Transit Buses
Commercial Buses
Specialty Buses
In the United States, approximately ___ to ___% of all buses on the road are either Type __ or __
85 to 90%
Type C or D
Smallest type bus; carries 10 to 20 passengers; entry/exit door aft of the front wheels; has driver-side door.
Type A
____ - GVWR of more than 10,000 lbs
____ - GSVR of less than 10,000 lbs
Type A-1
Type A-2
GVWR of more than 10,001 lbs; passenger carrying capacity of 16-24; Entry/Exit door aft of front wheel.
Type B
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
Type C
Full size bus with “boxy” appearance; no driver-side door; Entry/Exit door forward of front wheels; authorized carrying capacity of 66 passengers.
Type D
The body and chassis are formed as a unit.
Integral Construction
The body and chassis are manufactures as seperate units and joined by the bus manufacturer.
Body-on-Chassis
Finish panels of ___ gauge steel are typically mounted on the exterior and ___ gauge on the interior of the sidewall frame members.
20-gauge
22-gauge
Formed rub rails (_____ inch wide) of ___ gauge steel run the full length of the sidewall.
4-3/4 inch
16-gauge
One rub rail will indicate the _________; if a second rail is present, it will indicate the _________.
Seat Cushion Level
Floor Level
Emergency escape hatches open fully to provide a clear opening of at least __ x __ inches
11 x 14 inches
Structural members, acting as floor joists, are spaced as close as every ___ inches along the underside of the floor.
9 inches
When open, school bus front doors typically have a horizontal opening of between ___ and ___ inches and a minimum vertical opening of approximately ___ to ___ inches
22 and 24 inches
68 to 72 inches