The speed moderators are produced in 3 alternatives according to type of traffic flow. Cast iron moderators are used for heavy tonnage trucks, aluminium and rubber moderators are used for where small car traffic is high.

The aim of this material to slow down the car where approaching to pedestrian cross, junctions or school areas. The sizes of cast iron and rubber moderators are 42 cm of width and 50 cm of length. The sizes of aluminium moderators are 25 cm of width, 32 cm of length and 5 cm of height. These aluminium moderators are smaller than the others as seen.