Some pavement defects are more uncommon than others, and what faced Pavement Advisory Board member Don Rooney, Pioneer Paving & Grading, when he served as a consultant on a job was a bit of a puzzle.

CADT is Commercial Average Daily Traffic. RMA is Rubber Modified Asphalt. EL, EML, and EMH refer to mix design. The mixture number (2–5) corresponds to gradation, where 2 is the base mix and 5 is the ...