In meeting oncoming vehicle or passing slower ones, the portion selected by a driver depends primarily on the paved surfaced width of the highway. The width of the surfaced road and the no of lanes should are adequate to accommodate the type and volume of traffic anticipated and the assumed design speed of vehicles.

The geometric design of highway includes the principle elements of highway alignment, x-sections and adjacent road side environment. The three dimensional physical location determined through calculation of horizontal and vertical alignment of highway centerline, based on variety of operational considerations results in the geometric design and represent all

Traffic planner from various studies can predict the effect of travel patterns of alternative location proposed highway. Also they analyze the probable effect of new links in highway network. This permits the location engineer to determine how well alternative locations will fit with the existing network. Lanuse is a major factor affecting the pattern of traffic

A road network is composed of various types of roads, each of which performs a particular service in facilitating vehicular travel between points of trip origin and destination, and in providing access to property. Road classification is the orderly grouping of roads into systems according to the type and degree of service they provide to the public. Consideration for

The aim of location survey is to select a route with the following points kept in mind: 1. With reasonable economy it should meet the minimum requirement regarding curvature and grades. 2. To produce an easy riding (traveling), free flowing traffic artery that has a high capacity and it meets all the safety standards. 3. The location survey should recognize and evaluate the