List of Contributions

The present trend that I observed with the DOTs is that they only design these parameters and seldom check them during the life of the pavement. Unless there are lot of accidents occurring, they don't check it. Don't you think they should check at least once in a 5 year check by following what IOWA manual ...

I have assumed the same that they are obsolete methods but a report by IOWA in 2002 (https://nacto.org/docs/usdg/sight_distance_study_Iowa.pdf) made me think if those methods are still used or not. If you go to the page 4.6 in the PDF, they mentioned that they use sighting and target rods for measuring ...

Thank you. I am also following the AASHTO Little green book 2011. But I want to know more about the instruments used for traditional methods. For example, I read that sighting and target rods were used by IOWA state to measure sight distance. Do you think most of the states in USA are using it still? ...

What traditional methods are adopted by various government transportation agencies for measuring various geometric features (width of pavement, length of clear view of pavement (stopping sight distances), horizontal curve radius) of the pavement during the middle of its design life period? -- ...

Hello. I have learnt the theoretical procedure of measuring Pavement Serviceability Index but I was told that the field procedures vary among different agencies. I am interested to know the filed methods followed so can you please share your field operations and its drawbacks. Thank you. -------- ...