Limitation:Traffic signs, pavement markings, and lighting should be adequate so that drivers are aware that they should reduce their travel speed. Minimum Travel Pattern:In this road pattern, city is contented by sector center, suburban center and neighborhood center by the road which required minimum to connect the city center. Advantages:These types of potentially serious crashes essentially are eliminated.
Transportation Engineering- I 10CV56 Department Of Civil Engineering, SJBIT Page 11 Limitations:1.Traffic signs, pavement markings, and lighting should be adequate so that drivers are aware that they should reduce their travel speed. 2.Intersections can be especially challenging for older drivers. 2.What is saturation system of road planning? (June/ July 2014, Dec 2013) In this system optimum road length is calculated for an area based on the concept of attaining maximum utility per unit length of the road. This is also called as maximum utility system. Factors to attain maximum utility per unit length are: Population served by the road network Productivity (industrial and agricultural) served by the road network. The various steps to be taken to obtain maximum utility per unit length are: Population factors or units: Since, the area under consideration consists of villages and towns with different population these are grouped into some convenient population range and some reasoning values of utility units to each range of population serve are assigned. Population less than 500, utility unit = 0.25 501 to 1001, utility unit = 0.50 1001 to 2000, utility unit = 1.00 2001 to 5000, utility unit = 2.00 etc. Productivity Factors or units: The total agricultural and industrial products served by each road system are worked out and the productivity served may be assigned appropriate values of utility units per unit weight. Optimum Road length: Based on the master plan the targeted road length is fixed for the country on the basis of area or population and production or both. And the same may be taken as a guide to decide the total length of the road system in each proposal. 3.What are the objectives of 3rdroad development plan? How do you determine road lengths by 3rd road development plan formulae? (June/ July 2014, Dec 2014,June/July 2013 )