A vehicle moving at a speed of 80 Km/h is slowing traffic on a two-lane highway. What passing sight distance is necessary, in order for a passing maneuver to be carried out safely? Calculate the passing sight distance, assume that the following variables have the values given: • Passing vehicle driver's perception/reaction time 2.5 sec Passing vehicle's acceleration rate 2.4 Km/h/sec • Initial speed of passing vehicle 80 Km/h Passing speed of passing vehicle 100 Km/h Speed of slow vehicle 80 Km/h Speed of opposing vehicle 100 Km/h Length of passing vehicle 6.6 m • Length of slow vehicle 6.6 m • Clearance distance between passing and slow vehicles at lane change 6 m • Clearance distance between passing and slow vehicles at lane re-entry =6 m • Clearance distance between passing and opposing vehicles at lane re-entry = 75m

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Transportation Planning Process

A transport planning process is the process of defining future policies, objectives, investments, action plans and spatial planning projects to meet future transportation-related needs. As is being done today, it is a collaborative process that incorporates the views of a wide range of stakeholders including various central and local government agencies, state-owned enterprises and the private sector. Transport planners, planning organizations or federal agencies use a multidisciplinary approach to analyze a variety of alternatives and impact on the transportation system to contribute to profitable outcomes.