Committee Chair

Onyango, Mbakisya

Committee Member

Fomunung, Ignatius W.; Owino, Joseph O.; Wu, Weidong


Dept. of Civil and Chemical Engineering


College of Engineering and Computer Science


University of Tennessee at Chattanooga

Place of Publication

Chattanooga (Tenn.)


Pavement markings are lines drawn on a pavement surface to provide vital information to road users pertaining to lane restrictions and vehicle movements, which if adhered to, results in improved safety and smooth travelling to road users. Pavement markings’ visibility is quantified into a parameter called retroreflectivity, which is a measure of how well the markings can be seen by road users. The importance of the factors affecting pavement markings differs from one publication to another, which cause the effective management of pavement markings a difficult process. In addressing this concern, this thesis investigated factors affecting pavement markings and marking retroreflectivity in Tennessee highways using retroreflectivity data collected on asphalt highways. Quantifiable factors affecting pavement markings retroreflectivity are analyzed, and linear degradation models are developed using regression analysis. The analysis shows that age and traffic have significant impacts on pavement marking retroreflectivity degradation.


First of all, I would like to thank God Almighty who made me alive to this date, and allowed me to join the University of Tennessee, Chattanooga. Thanks to my parents, my father Rev. Aaron Malyuta and my mother Flora, for bringing me up and enabling me to achieve this step of success. My special thanks goes out to my thesis advisor Dr. Mbakisya Onyango for her guidance throughout the project. She has been very kind, and nice to me at every step of this study. Thank you to the administrative staff and faculty, Department of Civil Engineering, at UTC and TDOT. Their help in many ways, whether be academically, economically or advising me in my thesis or otherwise. They were always friendly and encouraging, and it did not go unnoticed. I would like to extend extra thanks to my committee members, Dr. Joseph Owino, Dr. Ignatius Fomunung, and Dr. Weidong Wu for their patience and guidance through this process. I would like to thank my whole family, who supported my entire academic career. Thank you to my dear brothers and sisters for all your caring efforts at all times. You have been great and very supportive to me throughout my life and education at University of Tennessee, Chattanooga. Thank you Esther Malyuta, Bujiku Malyuta, Rebeca Malyuta, Kondra Buganga Malyuta, Jeremiah Malyuta, Ayubu Malyuta and Elisha Malyuta. You have tremendously supported me throughout the duration of this study through your prayers. Thank you to Ahmed Mohamed, Ammari Elhasan, Iyad, Yang Weiran, Cameron Parker, Emmanuel Kidando, Evarist Ruhazwe, Abram Musinguzi and Mosab, who spent countless hours riding in a car and collecting data on the highways, without getting bored with high traffic, all the day long, tirelessly. A special thanks to Mohamed Khalafalla as he was invaluable during the data collection process. I could not have done this without his sanity during all the times on highways. Their help and friendship will not ever be forgotten. Thanks to Paul Laskowske for his invaluable help on language, as he spent time with me for making this thesis be as it is. His help and friendship will never be forgotten. I would like to thank everyone that has contributed to this project in any way. Some prayed for me, some advised me, some encouraged me, and some helped me economically so as to achieve this project. I would like to especially thank Mr. Nelson Mwemezi and the family, Gwamaka Mwambogela, John Parkhurst, Immaculate Daniel, Mr and Mrs. Daniel Dotto and their family, for their encouragement and prayers.


M. S.; A thesis submitted to the faculty of the University of Tennessee at Chattanooga in partial fulfillment of the requirements of the degree of Master of Science.




Pavements -- United States -- Design and construction; Road markings -- Materials; Reflectors (Safety devices) -- Evaluation



Document Type

Masters theses




xiv, 89 leaves