TIA_for_Highway_Infrastructure

TIA_for_Highway_Infrastructure - Civl 395 Traffic Impact...

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Civl 395 Traffic Impact Assessment for Highways Infrastructure 1. INTRODUCTION 1.1 As the demand for urban development intensitives and the scope for increasing the capacity of the existing road network limited, traffic engineer and town planner have increasingly aware of the potential deterioration in the quality of service and capacity afforded by the existing road network. This led to the requirement of a more closely examination of the impacts that infrastructure proposals are expected to have on the transportation systems. 1.2 When a highway infrastructure improvement proposal recommended under the district traffic study, one important issue associated with the new highway infrastructure improvement proposal is what traffic will use this highway infrastructure. Generally, the following questions should be answered by the traffic impact study. what are the existing traffic conditions what additional traffic will be attracted to use this new highway infrastructure how will this additional traffic affect existing conditions what types of improvements or changes in the site plan density or use would be necessary to minimise the traffic impact of the proposed development. 1.3 In addition to answer the questions raised by the authority, the primary objectives of the TIA is: To assess the traffic and transport implications of the Proposal on the adjacent road network and transport facilities. To devise and recommend appropriate and feasible road improvements and traffic management measures as solutions to the adverse impacts identified. 1.4 The Traffic Impact Assessment (TIA) should be an impartial description of the impacts and should highlight both the positive and negative aspects of the proposal. The TIA should not be a promotional exercise undertaken on behalf of the authority. 2. TRAFFIC DATA COLLECTION 2.1 In order to collect the up-to-date traffic information, e.g. traffic volume, trip types and trip origins and destinations, traffic survey need to be planned in advance and the following survey can be carried out to collect necessary traffic data: Manual Classification Count - turning movement count - screenline count Questionnaire Survey - trip purpose - O/D Trip Generation Survey Queue Length Survey Travel Time Survey Public Transport Route Inventory October 2003 Page 1 //home/vdimitrov/26847/e271bb577c2f05d3860e813f8bb8c76f5cb86b70.doc\jch
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Civl 395 Traffic Impact Assessment for Highways Infrastructure 3. TRAFFIC MODELLING 3.1 Estimates of traffic flows for the study area network at each design year are required to form the 'base' conditions. There are two principal methods of produce traffic forecasts. (i)
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This note was uploaded on 12/24/2011 for the course CIVL 202 taught by Professor Chung during the Spring '10 term at HKUST.

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TIA_for_Highway_Infrastructure - Civl 395 Traffic Impact...

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