For these purposes, "freeway workzone management manual" was adopted for Korean freeway and has been used combining signs, markings, speed management systems based on their idealized combinations. However, as traffic volume is getting growing, the nee...
For these purposes, "freeway workzone management manual" was adopted for Korean freeway and has been used combining signs, markings, speed management systems based on their idealized combinations. However, as traffic volume is getting growing, the needs to reduce the drivers driving loads, and enhance simplicity and uniformity is increasing. Then, improved guideline are needed. The study is to provide the improved guidelines . As results of the study, there were studies of comparison between freeway workzone management manuals from Korean and foreign advanced countries and of traffic accident statistics. Comparing other manuals, it was found that the Korean manuals have the problem of complexity. Comparing traffic accident statistics of other freeway sections, it was found that traffic accident statistics of drops or drowziness is more frequent than the other sections. It was also found that the traffic accidents at warning sections before workzones frequently occurs.