Preventing the Occurrence of Bumps in HMA Overlays Status: CompleteReport Date: 09/16/2010 Summary: Researchers identified construction methods and materials for preventing the occurrence of bumps in hot-mix asphalt overlays, finding that best practices include using specified rolling techniques during warmer weather, low-modulus sealants, and narrow and shallow crack sealant reservoirs while avoiding overbanding. Final Deliverables: Report #2010-31 Technical Summary Related Materials: Common Practices for Avoiding Bumps in Overlays (and what to do if they occur) - (Brochure/Handout) Related Research: