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Guidelines for the Environmentally Optimized Design of Low Volume Roads (Inglês)

The provision of all-weather road access to all citizens is a key development priority facilitating both accessibility and road connectivity to the many habitations in the rural areas of India, which is being implemented under a national level program, Pradhan Mantri Gram Sadak Yojana (PMGSY) and many sub-national programs. The traffic levels on most of these roads are very low, typically below 300 motorized vehicles per day, consisting of mostly farm tractors and light commercial vehicles with very few heavy commercial vehicles. Whilst there are potentially significant life-cycle benefits to be achieved from upgrading the existing unpaved low volume rural roads to a paved standard, the cost of doing so following traditional approaches to road design and materials utilization can be prohibitive. This is because such approaches tend to be overly conservative for application to Low Volume Roads (LVRs). This has led to a need to develop an alternative design procedure with the objective of enhancing the efficiency and effectiveness of LVR provision and, by extension, reducing the cost of providing much needed connectivity in the rural areas of the country. The main purpose of these guidelines are to provide practitioners with the requisite tools for undertaking an environmentally optimized approach to the design of LVRs in India that takes account of the many locally prevailing road environment factors that impact on the design of such roads. The guidelines take account of the many advances in LVR technology based on a number of international research and investigation projects that have been carried out in environments similar to those prevailing in India. In essence, therefore, the guidelines provide an alternative approach to the design of LVRs that, in some respects complements, and in other respects enhances, traditional approaches adopted in other IRC guidelines




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