Instruction
1
Speed bumps must meet certain technical requirements. It is set to limit speed to 40km/h. By construction, they are prefabricated and monolithic. The length of obstacles should not be less than the width of the roadway. Permitted deviation in 20 cm on each side.
2
Before installing the humps should be installed a drainage from the roadway. You must install appropriate signs and to apply a certain markup.
3
Monolithic construction should be made of asphalt and can be wave-like or trapezoidal. You should also pay attention to the slope, which is adjustable in accordance with the presence dazdarian wells.
4
Collapsible design consists of a geometrically similar and matching items, and is made of elastic material with a fixed hardness from 55 conventional units. Before installing a speed bump is needed in the way the corresponding holes. Allowed to use single layer or double layer structure.
5
On the surface of artificial roughness applied retroreflective elements which are oriented in the direction of traffic. Their area shall be not less than 15% of the total area of a speed bump.
6
The bumps are only installed on asphalt and concrete surfaces where there is artificial lighting. The necessity of installation is determined based on the conditions on a specific section of road taking into account traffic volume. Speed bumps are installed at dangerous sections of roads, educational and training institutions, stadiums, stations, shops, residential area.