(September 12, 2016, 11:41 AM EDT) -- NEW ORLEANS — An accident reconstruction expert may not opine on the nature of a collision because the expert did not inspect the vehicles involved in the accident, a Louisiana federal judge ruled Sept. 8, excluding the testimony along with any medical causation testimony (Alan Brown, et al. v. Regions Insurance Inc., et al., No. 14-813, E.D. La.; 2016 U.S. Dist. LEXIS 121165)....