Archive | Highway

Rotary Intersections of Highway: Design Elements, Advantages & Disadvantages

A rotary intersection is a specialised form of intersection-at-grade in which the traffic movies in one direction round a central island. For 'keep-to-the-left' rule, vehicles approaching the intersection are forced to move around the central island in an orderly manner and weave out of the rotary into their respective desired directions. Design Elements of a Rotary: A number of elements [...]

By |2018-07-23T10:36:46+05:30July 23, 2018|Highway|Comments Off on Rotary Intersections of Highway: Design Elements, Advantages & Disadvantages

Highway Intersection and Its Types [with notes and diagram]

When two or more roads intersect or cross, the users of these roads have to necessarily adjust their movement in order to avoid 'collision'; this adjustment could be by way of reduction in speed and/or change in the path of their motion. An intersection is defined as "the general area where two or more highways join or cross, within which [...]

By |2018-07-23T10:36:46+05:30July 23, 2018|Highway|Comments Off on Highway Intersection and Its Types [with notes and diagram]

Materials Used for the Construction of Roads: Methods, Process, Layers and Road Pavement

Materials Used for the Construction of Roads: Methods, Process, Layers and Road Pavement! A wide variety of materials are used in the construction of roads these are soils (naturally occurring or processed), aggregates (fine aggregates or coarse aggregates obtained from rocks), binders like lime, bituminous materials, and cement, and miscellaneous materials used as admixtures for improved performance of roads under [...]

By |2018-07-23T10:36:46+05:30July 23, 2018|Highway|Comments Off on Materials Used for the Construction of Roads: Methods, Process, Layers and Road Pavement

Highway Economic Analysis or Highway Project Appraisal

Highway economic analysis, also known as highway project appraisal, involves quantification of the costs of and benefits from a scheme over a selected time horizon and evaluation by a common yardstick. The technique is also known as benefit-cost analysis. Such economic evaluation serves a number of purposes: (i) To rank different schemes within the highway sector. (ii) To assist in [...]

By |2018-07-23T10:36:45+05:30July 23, 2018|Highway|Comments Off on Highway Economic Analysis or Highway Project Appraisal

Highway Economics, Financing & Administration | Transportation Engineering

A good highway network provides several benefits to the general public and the society at large. However, any new highway project, or improvements to an existing highway for meeting increased traffic demands should be justified from the economic point of view. That is to say, an analysis of the economic cost - the initial cost and maintenance cost over the [...]

By |2018-07-23T10:36:45+05:30July 23, 2018|Highway|Comments Off on Highway Economics, Financing & Administration | Transportation Engineering
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