2 strategic location for camera view. Figure 2

2 Project Description The project starts from Zero Point Interchange and Ends at the junction of Islamabad Highway and N-5. Total length of this section under study is approximately 24 km. This corridor consists of four major signalized intersection and number of uncontrolled entry and U-Turns. Figure 1 shows the location of the corridor. Initially, CDA planned to improve the whole corridor in one project. However, later they decided to complete the project in phases. The divided the project into two phases. First phase is from Zero Point to Airport Intersection and Second phase is from Airport Intersection to the intersection of Islamabad highway with N-5. There are different traffic studies conducted to understand the existing traffic condition on the corridor and as well as to estimate the future traffic operations. Following are the traffic studies performed in this project.  ? Traffic Volume Study ? Travel Time Study ? Capacity Analysis Each study and analysis is presented in detail in proceeding sections.  3     Figure 1 Islamabad Highway Corridor  4  3 Traffic Volume Study 3.1 Background Zeeruk International (Pvt.) Ltd. with the collaboration with TASKK Enterprises had conducted the traffic study on Islamabad Highway. The purpose of collecting the transport survey data is to develop an understanding of how the existing road transport system operates on Islamabad Highway.  3.2 Scope of Study The survey scope and locations were specified with agreement of the Capital Development Authority (CDA) and in accordance to the project TOR. The surveys includes the following:- ? Directional Classified Counts at five locations o One weekday day per location o Classified counts o Volume Hourly Summary ? Turning Movement Counts  at Ten locations o Processing of two Peak Periods  o Classified Counts o Count to be conducted in Weekday from Monday to Friday Zeeruk conducted all the survey using state of the art equipment. All of the surveys were scheduled and conducted under the supervision of Zeeruk International staff. The details of methodology adopted for each type of survey and quality insurance process are presented in proceeding sections. 4 Directional Counts 4.1 Data Collection Methodology Directional counts were conducted using Miovision Video Collection Units (VCUs) that capture the directional movement of all vehicles passing through a location. The number of VCUs installed at a location depends on the size and visibility at the specific location. The Miovision VCU is a selfcontained tool for collecting traffic videos. TASKK also used the tripod configuration which is stand alone and does not require any fixing to light poles or traffic signs. This is very useful in 5  scenarios where there is no available existing pole at strategic location for camera view. Figure 2 shows the VCU unit and extendable pole used in this project.   Figure 2 Scout Video Collection Unit 4.2 Locations In total five two-directional classified 24 hour counts were planned for this project. In addition to these five locations, we recorded extra two locations as requested by Zeeruk International. Figure 2 shows the 7 locations where 24 hour directional counts were conducted between  Wednesday 10th December to Friday 13th December.        Super Wide Dynamic CameraControl UnitScout Pole Mount Extendable to 7.62 meters6    Figure 3 Seven locations for 24 hr. directional counts  7   4.3 Data Extraction and Quality Assurance Following the video collection the raw data is compiled for processing. The video was recorded and stored digitally so that it could be reviewed after the survey was completed. The correct positioning of cameras is of paramount importance to ensure that all movements are captured and can be subsequently observed and counted. Therefore the fieldwork at each location was managed through a trained site supervisor with experience of this work. The analysis / processing of the video was conducted by our specialist who had completed over 150,000 hours of traffic video analysis for clients across many countries over the past six years. The video was downloaded and reviewed on large monitors in comfortable offices with the advantage of being able to pause, stop, rewind as required to ensure the classified vehicle counts are as accurate as possible. Two separate tasks were completed for quality control and check. ? Comparison between the closely spaced locations  ? Using TRAIS software to extract vehicle count for video files