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Traffic Data Collection

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Traffic Data Collection
EXERCISE 1 TRAFFIC DATA COLLECTION AND PRESENTATION

CE 5203 TRAFFIC FLOW AND CONTROL

ADITYA NUGROHO HT083276E

DEPARTMENT OF CIVIL ENGINEERING

NATIONAL UNIVERSITY OF SINGAPORE
2010

Department of Civil Engineering CE 5203 Traffic Flow and Control

1.0 INTRODUCTION The measurement of traffic volumes is one of the most basic functions of highway planning and management. Traffic counting can include volume, direction of travel, vehicle classification, speed, and lane position. In this Exercise 1 the objectives are:  To understand how to observe, classify traffic by space, time and modes on Clementi Avenue 6 in direction from AYE to PIE road;  To describe the traffic conditions (qualitatively) on this road section;  To measure the traffic and categorize by time interval, lane position, vehicle types. 2.0 DATA COLLECTION METHOD 2.1 Traffic measurement Data collection is a critical step in the analysis process of traffic counts. Knowing what to collect, when to collect, how long to collect, where to collect, and how to manage the data must be addressed before starting the collection. In this Exercise 1, several matters should be considered before do the traffic counts.  A marked line- a certain line should be set as a reference to count vehicles. We count vehicle when they cross the lines drawn on the screen from the front bumper touching the line within strict lane discipline.  Interval length-as traffic count is discrete, it is necessary to choose an appropriate time interval to set vehicles into different groups. In our exercise the interval is predetermined as 5-min by the lecturer.  Vehicle type-we divide vehicles into 4 groups including car, bus, lorry and motorcycle.  Choosing lane- traffic lanes are often referred to by number. The right or “fast” lane is called the “Number 1 Lane.” The lane to the left of the “Number 1 Lane” is called the “Number 2 Lane”, then the “Number 3 Lane”,  Road type: Motorways, urban roads, and inter-urban



References: A Policy on Geometric Design of Highway and Streets 2001, 4th Ed. (AASHTO) Highway Capacity Manual. 2000. Special Report 209, 4th Ed., TRB, National Research Council, Washington, D.C., Traffic Monitoring Guide, 3rd Ed. Federal Highway Administration (FHWA) Traffic Flow Theory A State-of-the-Art Report (2001). Committee on Traffic Flow Theory and Characteristics (AHB45). TRB, National Research Council, Washington, D.C., 7 Department of Civil Engineering CE 5203 Traffic Flow and Control Appendix Location: Clementi Ave 6 City/Town: Singapore Direction: AYE to PIE Recorder: Interval: (In Minutes) Video 5 ____________________________________________________________ __________ __________ _ _ _ _ _ _ Lane: 1 ENDING --------6:50 - 6:55 6:55 - 7:00 7:00 - 7:05 7:05 - 7:10 7:10 - 7:15 7:15 - 7:20 Lane: 2 --------6:50 - 6:55 6:55 - 7:00 7:00 - 7:05 7:05 - 7:10 7:10 - 7:15 7:15 - 7:20 Lane: 3 --------6:50 - 6:55 6:55 - 7:00 7:00 - 7:05 7:05 - 7:10 7:10 - 7:15 7:15 - 7:20 Lane: 4 --------6:50 - 6:55 6:55 - 7:00 7:00 - 7:05 7:05 - 7:10 7:10 - 7:15 7:15 - 7:20 --------TOTAL TIME CAR TYPE 1 --------49 40 50 42 50 40 271 19 10 13 12 14 13 81 22 16 20 17 15 22 112 29 47 47 52 45 46 266 730 BUS TYPE 2 --------5 2 3 9 2 2 23 9 6 9 11 0 1 36 2 0 2 1 0 2 7 4 2 4 4 5 3 22 88 LORRY TYPE 3 --------0 0 3 0 0 2 5 12 8 17 8 14 24 83 1 0 0 2 2 3 8 4 2 8 5 0 5 24 120 MC TYPE 4 --------6 5 5 5 7 7 35 15 5 7 14 15 16 72 1 1 0 0 3 2 7 1 0 0 0 1 0 2 116 --------60 47 61 56 59 51 334 55 29 46 45 43 54 272 26 17 22 20 20 29 134 38 51 59 61 51 54 314 1054 TOTAL 8

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