What is Wheel Base and Cab Type
The purpose of this document is to explain what is wheelbase and Cab type.
Overview#
Purpose: The purpose of this document is to explain what is wheelbase and Cab type. Understanding Wheelbase and Cab type are very important as most of our products require this information.
Scope: This procedure applies to all assigned Bragan Personnel.
Responsibility: It is the responsibility of each employee to ensure the process set out in this procedure is followed.
Objective: The objective of this procedure is to guide Bragan personnel to understand what is Wheelbase and Cab type.
What is Wheel Base#
A car’s wheelbase is the distance between the centers of the front and rear wheels. It’s, therefore, a smaller number than the car’s full length, as measured from its front and rear end.
(See figure below)
Different kinds of Wheel Base#
(See figure below)
What is Cab type#
The cabin or cab of a truck is the inside space in a truck where the driver is seated. Modern long-haul (long-distance) trucks cabs usually feature air conditioning, a good sound system, and ergonomic seats (often air-suspended).
Cab Type for Pickup Truck#
There are usually three types of cabs in pickup trucks:
Regular cab means a pickup truck with 2 doors. It has a single row of seating and may seat one or two passengers.
Extended cab means a cab with rear seating. It can have two, three, or four doors.
Crew Cab means a 4-door truck cab. Is sometimes called a Double cab.
This Figure above shows an example reference of Cab types for Pickup Trucks.
Cab Type for Larger Truck#
There are a few possible cab configurations:
Cab over engine (COE) or flat nose, where the driver is seated on top of the front axle and the engine. Cab overs have a shorter wheelbase and good visibility. COE's are still popular among medium and light-duty trucks in the United States. To access the engine, the whole cab tilts forward.
Conventional cabs where the driver is seated behind the engine similar to a pickup truck. Conventionals are further divided into "large car" and "aerodynamic" designs. A "large car" or "long nose" is a conventional truck with a long (6 to 8 foot (1.8 to 2.4 m) or more) hood. With their very square shapes, these trucks experience a lot of wind resistance. They typically consume more fuel. They also provide somewhat poorer visibility than their aerodynamic or COE counterparts. By contrast, Aerodynamic cabs are very streamlined. They have a sloped hood and other features to lower drag. The front doors are behind (and mostly above) the front tires. Access
to a conventional cabin is commonly by steps at or near the fuel tank(s) behind the front tires.
A sleeper (or sleeper-berth or bunk) is a compartment attached to the cab where the driver can rest while not driving. It is frequently on long-haul semi-trailer trucks. They can range from a simple 2 to 4 foot (0.6 to 1.2 m) bunk to a 12-foot (3.7 m) apartment-on-wheels. It allows drivers to spend weeks on the road moving cargo.
(Figure #1 shows a sample of long-haul semi-trailer trucks, Figure #2 shows a sample of Sleeper berth or bunk).
Video & Media#
Notes#
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Additional Notes:
What is Wheel base What is Cab Type Understanding Wheelbase and Cab type are very important as most of our products require this information.
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Attachments#
Wheel_Base_and_Cab_Type.txt 16/12/2025