| Title |
A Study on Improving the National Highway Traffic Counts System : With Focus on Short Duration Counts and Continuous Counts |
| Authors |
이상협(Lee, Sang Hyup) ; 하정아(Ha, Jung Ah) ; 윤태관(Yoon, Taekwan) |
| DOI |
https://doi.org/10.12652/Ksce.2012.32.3D.205 |
| Keywords |
교통량조사;수시조사;상시조사;중차량 traffic counts system;short duration counts;continuous counts;AADT;heavy vehicle |
| Abstract |
The national highway traffic counts system consists of short duration counts and continuous counts. Unlike continuous counts, short duration counts are performed by collection of a few days period and thus, the magnitude of deviation of collected data from AADT varies depending upon when data collection takes place. Therefore, this study was done to find out the best months and days of data collection of each highway classification in order to enhance the accuracy of AADT estimation. Continuous counts, another type of the national traffic counts system, are performed by collection of 365-day period using a permanent traffic counter. Therefore, it is necessary to keep the number of days for which the counter malfunctions to a minimum in order to enhance the accuracy of data. However, from time to time the permanent traffic counter malfunctions due to various causes and thus, cannot collect data. Therefore, this study was done to find out whether the age of counter, the ratio of heavy vehicle volume to total traffic volume, etc. could be the direct causes of counter's malfunction based on the number of maintenance for a certain time period. |