| Abstract: | The application of seal coat, or chip seal, on pavements will partially fill existing rumble strips (Figure 1) and can reduce the performance of rumble strips to alert drivers of possible lane departure. If the reduction is severe enough, the seal coat treatment can undermine the ability of the rumble strip to serve its intended function (1). In TxDOT research project 0-7029, the research team at the Texas A&M Transportation Institute investigated the impact of sequential seal coats, seal coat grade type, and other factors on rumble strip performance. The key recommendations from of the study, presented in this document, can guide TxDOT engineers about whether seal coat should be placed over an existing rumble strip. |
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