CE 5203 TRAFFIC FLOW AND CONTROL
ADITYA NUGROHO HT083276E
DEPARTMENT OF CIVIL ENGINEERING
NATIONAL UNIVERSITY OF SINGAPORE
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... [continues]
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