Hydraulic type

Electrical type

Mechanical type

Pneumatic type

Shock absorber

Suspension spring

Air bags in the system

Leaf spring

Betweeen frame and vehicle axle

Between high control valve and frame

Between air pressure regulator and front axle

Between brake tank and vehicle axle

Used for leveling purpose

Reduce the suspension weight

Increase the directional stability

Reduce the space ocupation

More maintanance cost

Vibration damping is less effective

Shocks transmitted from one wheel to other

Spring weight is more