research report Detecting changes in accident rates using a hierarchical Bayesian approach: An application to the I-710 and the implementation of the PierPASS program Publication Date January 1, 2017 Author(s) Ankoor Bhagat, Jean-Daniel Saphores, R. (Jay) Jayakrishnan Suggested Citation Ankoor Bhagat, Jean-Daniel Saphores and R Jayakrishnan (2017) Detecting changes in accident rates using a hierarchical Bayesian approach: An application to the I-710 and the implementation of the PierPASS program.