• Department of Meteorological Engineering and Transport

          Network of road meteorology stations is responsible for activities like: statistics analysis, information, forecasting, early warning, warning, numerous weather related announcements, road and railway transportation issues, flood accordance at roads, road maintenance stations and finally public health and the construction and in particular road activities. Factors measured at the road meteorology station consist of: studying destructive weather phenomena, effective elements in reducing visibility, rainfall and flood analysis, showers, snow and avalanche, mountains collapse and cliffs sliding, sand storms, dust and squall and snow blizzard, frost and freezing and effective slippery scales on the surface of the roads, atmospheric pressure on the surface of the road, the intensity of surface winds and the minimum and maximum temperature threshold, humidity and relative humidity, temperature at different depths of soil and ground, final amounts of sunshine, terrestrial radiations, height of lowest clouds, amounts of precipitation, snow height, density and water equivalent.

          a)      Continuous preparation of information and statistics on changing and evolution of meteorological elements at roads of the areas covered by relevant stations.

          b)      Issuing specific weather forecasts during the route on size wind speed severity, pressure systems, regions with various types of storms with lightning and occurrence of destructive phenomena.

          c)      Releasing notices and warning about the dangerous weather phenomena on the route, snow melting speed on the mountains, severity of winds on the bridges and different phenomena that are effective in reducing visibility, especially in terms of flood forecasting, information on snow and snow height, temperature changes during day and night, various types of fog formation on the roads.

          d)     Land navigation of transportation and railway are of the significant issues of national economy. The current needs of these activities leads to time and place evolution of atmospheric conditions. Information needed for this evolution consist of using weather forecasts of different time periods, issuing road warnings before occurrence of meteorological phenomena, preparing information on quantities and characteristics of elements and meteorological phenomena at different moments or time periods. Most especially in form of issuing warnings on floods which can damage the foundations of roads and bridges.

          e)      Meteorology can be helpful in road construction as follows:

          -          Using hydrological information and findings on floods and river discharge (on retaining walls construction).

          -          Using meteorological information and fluctuations of heat and cold in different seasons for defining asphalt specification and etc.

          -          Using meteorological information such as the amount and intensity of rainfall and flood in surface waters drainage, defining aqueducts characteristics and road slope gradient in order to prevent roads and technical constructions substrate degradation.

          -          Using meteorological information, precipitation amounts and rivers regime for defining routes for newly constructed roads.


          f)        Meteorology can be helpful in road maintenance as follows:

          -          Using the information about weather in the desert and sandstorm related to the crops cultivation at the edge of desert roads and make barriers to prevent dunes.

          -          Using meteorological information and amount of precipitation in every region to road maintenance planning (road maintenance machinery equipping).

          -          Using meteorological information to issue timely warnings for owners of vehicles.

          -          Using meteorological information for installation of appropriate traffic signs in the roads.


          g)      Meteorology can be helpful in transportation as follows:

          -          Using meteorological information for planning of traffic loads.

          -          Installing public weather screens for public information.

          -          Cooperation in preparing the order of internal and external purchases according to technical standards.

          -           Supervision, operation, conducting, managing and updating the national road network.