In the previous article was presented on highway safety program , in order to feel safe would have to know the understanding of the highway , with the hope of this knowledge we are more cautious and always obey all traffic laws on the highway .
Understanding highway
is the main road that connects the region with other regions .
The highway characteristic features are as follows :
- Used by the general public
- Used for motor vehicles
- Financed by the state
- Its use is governed by the laws of the transport
Highway construction
Basically highway construction is the process of opening the room traffic that overcomes various obstacles of geography . This process involves the transfer of the land, bridge and tunnel construction , and even the transfer of plants. ( This may involve slashing the forest ) . Various types of road construction machinery will be used for this process .
if necessary , the soft soil will be replaced with a more hard ground . The soil layer will be the base layer . So on top of this base layer will be coated with one more layer called the surface layer .
Usually made with a surface layer of asphalt or cement .
The flow of water is one of the factors to be taken into account in the construction of highways . Surface water gathered on roads after rain not only endanger road users , will erode and even destroy the structure of the highway. Because the actual road surface is not really flat , otherwise has a slope that is directed into the roadside ditch . Thus , rain water will flow back into the gutter .
On the road surface may also be placed " cat's eye " , a kind of shiny object like a stone " embedded " in the road surface raya.Setelah retroflektor installed in dangerous places such as sharp bends . Its function is to indicate the limits of the track.
HIGHWAY CONTRUCTION