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Types of traffic controlling devices | Traffic Signs 19 Jun 2013 | 04:46 pm
Traffic Signs Traffic signs are means of warning, regulating and informing the drivers. Material for traffic signs Material should be such that Which does not lost its color often. Rust resistant. Usu...
Traffic controlling devices | What are pavement markings 18 Jun 2013 | 02:37 pm
Traffic controlling devices The devices which are used to control and regulate the flow of traffic are called traffic controlling devices. These are of three types: Pavement markings. Traffic signs. T...
What is Lane occupancy ? 9 Jun 2013 | 08:36 pm
Lane occupancy Lane occupancy is the ratio of the sum of the lengths of the vehicles to the length of the road section in which those vehicles are present. To find lane occupancy, we are concerned wit...
Definition of traffic density | Headway and Spacing | Clearance and Gap 25 May 2013 | 06:02 pm
Traffic density Traffic density is the number of vehicles occupying a given length of the highway in a traffic lane. It is expressed as vehicle/mile or vehicle/kilometer. For example 4 vehicles are p...
Definition of speed | Traffic volume and Traffic rate of flow 19 May 2013 | 03:29 pm
Speed Distance covered by vehicle in unit time is known as speed. Its units are miles/hour or km/hr. Traffic Volume (q) The actual number of vehicles observed to pass a given point on the highway in a...
Definition of Sight distance | Stopping and passing sight distance 14 May 2013 | 07:46 pm
Sight distance The clear distance ahead of vehicle which is visible to the driver is known as sight distance. If suitable sight distance is not provided on the curves, then highway become accidential ...
Definition of Super Elevation | How we provide super elevation in the field ? 14 May 2013 | 02:47 pm
Super Elevation Whenever on roads, curve has to be made, outer edge of the road on the curve is raised as compared to the inner edge. This is known as super elevation. Whenever the vehicle is moving i...
Harmful effects of water logging and salinity 12 May 2013 | 05:24 pm
Harmful effects of water logging and salinity Harmful effects of waterlogging and salinity are caused by unthoughtful planning of irrigation system. With respect to water logging and salinity, there a...
Definition of salinity 9 May 2013 | 02:29 pm
Definition of salinity When the water table is close to the surface, and the water rises to or very close to the ground surface, evaporates leaving behind dissolved salts in the soil pores and ultimat...
Definition of waterlogging 9 May 2013 | 12:51 pm
Definition of waterlogging When the water table rises to such heights that the soil pores in the root zone become saturated, thus displacing the air, the land is said to be water logged. Waterlogging ...
