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In 2010 Highway Capacity Manual, one preferably determines free-flow speed by deriving it from a speed study involving the existing facility or on a comparable facility if the facility is in the planning stage. Many have used a ‘rule of thumb’ by adding 10 km/h (5 mi/h) above the posted limit to obtain free-flow speed without justification. Two team members using a radar gun and manual tally sheets...
Traffic on Indian roads (both urban and inter-urban) consists of a variety of vehicles. These vehicles have widely different static and dynamic characteristics. The traffic is also very different from homogeneous traffic which primarily consists of motorized vehicles. Homogeneous traffic follows strict lane discipline as compared to non-homogeneous traffic. Western traffic planning methodologies mostly...
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