The impact absorbing ability of Airfence Speedway is achieved by the unique multi-chamber design. Four chambers are lightly inflated while middle chamber remains at normal air pressure. The front and rear chambers are forced apart by "separating cushions" which in turn create the normal air chambers inside.

When a rider hits the barrier, all chambers work to absorb the impact, exhausting varying amounts of air to adjacent chambers and to the atmosphere. Like other Airfence, the primary aim of the barrier is to eliminate the "spike" or very short, sudden deceleration which is so damaging. It provides graduated deceleration instead. Rebound is also minimized as air has been released from each of the chambers, particularly the middle, normal air pressure chamber. So the rider is "caught" rather than the energy of the impact being stored and released through rebound.

At the bottom of the barrier is a "skirt" which replaces the traditional kickboard. Made out of 4mm thick conveyor belt, it provides a base for the barrier soft enough to absorb the impact of a fallen rider sliding into the barrier, but hard enough to "ride off" if his back wheel makes contact. The skirts overlap to provide continuous protection. Of course the skirt also minimizes the chances of a rider sliding underneath the barrier.