Traffic Volume StudyList of contents1. Introduction2. Scope and objectives3. Methodology4. Data collection5. Data analysis6. ConclusionIntroduction1.1. Traffic Survey: Traffic engineers and planners need traffic information. They need information to design and manage the road system and traffic. They use the information to plan and design traffic structures, selecting geometric standards, economic analysis and prioritization. They use it to justify securing traffic control devices such as signals, traffic signals, road markings, school and pedestrian crossings. They also use this information to study the effectiveness of the introduced systems, diagnosing certain situations and finding appropriate solutions, predicting the effects of designed strategies, calibrating and validating traffic models. The transportation system is a dynamic system. Traffic information needs to be updated regularly to keep up with the ever-changing transportation system. Data must be collected and analyzed systematically to obtain representative information. Traffic investigations are the means of obtaining traffic information. It is a systematic way of collecting data to be used for various traffic engineering purposes.1.1.a. Main purposes of traffic survey: The main purposes of traffic survey are: traffic monitoring, traffic control and management, traffic enforcement, traffic prediction, model calibration and validation etc.1.1.b. Parts of traffic studies: Traffic studies include: Inventory of physical characteristics of road traffic Traffic flow characteristics: volume, speed, density, occupancy studies, etc. Road and intersection capacity studies Studies on the use of the system: travel times and delays, OD survey  Travel demand: survey with home interview Cost of road users: value of travel time, vehicle operating cost Studies on the supply and demand of parking Axle load survey Mass transit performance and usage studies Traffic accident studies Transportation environmental impact studies1.2. Traffic volume study: Traffic data is needed in the research, planning, design and regulatory phases of traffic engineering and is also used in established priorities and traffic improvement programs. The traffic engineer shall acquire a general knowledge of traffic volume characteristics in order to measure and understand the magnitude, composition, and time and route distribution of the volume for each area under his jurisdiction.1.3. Definitions:1.3.a. Volume/Flow: The total number of vehicles passing a given point or section of a lane or roadway during a given time interval. It is the actual number of vehicles observed or expected to pass a point during a given interval.1.3.b. Capacity: The equivalent hourly rate at which vehicles pass a given point or section of a lane or roadway in a time interval of less than 1 hour. usually 15 min.1.3.c. Average Daily Traffic (ADT): The volume during a given time period divided by the number of days in that time period and expressed in terms of vpd.