Double-decker coaches in the UK have traditionally been 12 metres (39 feet 4 inches) in length, though many newer models are about 13.75 metres (45 ft 1 in). Coaches are normally built to 4.38 metres (14 ft 4 in) high, while 'highbridge' buses are normally about 20 centimetres (8 in) taller.
Large, full-sized skoolies with 10+ windows benefit from have enough space to do a variety of different floor plans, but are the most limited on places to park when travel. A full size school bus is any bus over 35 feet in length, with most between 40 – 42 feet in length.
Type C: This is the most common school bus on the road and is considered the traditional school bus. Its conventional design is a flat chassis with a gross weight rating typically ranging between 23500 lb to 29500 lb. The bus is designed to carry 90 passengers.
The typical school bus will accommodate 48 adult passengers (2 per seat) or 72 children (2nd grade or younger sitting 3 per seat). Is a large bus just too big for the operating area, we have small buses too, which typically seat 10 adults or 20 children (2nd grade or younger).