SOR CN 12 is two-axle, while the space ahead of the rear axle is a low-floor.

Vehicle body is welded from steel sections, outside is flashing, inside lined with plastic sheeting.

To the rear of the vehicle, under which is hidden drivetrain, has two steps (as part of a low-floor and the last door).

A similar solution is quite common for other producers and indicates the general concept of low-entry (loosely translated as "vehicle with low starting edge"), respectively.

In the case of the bus SOR CN 12 However, this solution is unique variable height of the roof of the vehicle, popularly known as "hump".