Traffic Research At Virginia Tech Looks At Sign Visibility In Fog. In the wake of a 41 car accident on I-81, experts in traffic and visibility at Virginia Tech are looking at several options for new signs on I-81 to warn of fog and other adverse traffic conditions. Researchers have been using simulated fog banks on test tracks to determine what kind of sign offers the best warning to drivers and is the most visible. The results of the research may also affect local traffic in the Charlottesville Albemarle area as new signs are being considered for I-64 in the Afton mountain crossing. I have worked with traffic engineers on several personal injury cases. It can be very important to look at road conditions and other traffic safety issues to determine the cause of an accident. Was it driver error or were there other factors involved in the accident? Sometimes, even an experienced personal injury lawyer has to consult an expert to conduct a more extensive and scientific review of the evidence in order to prove a legal case of causation. Francis P. Hajek Wilson & Hajek, LLC, a personal injury law firm Experienced Injury and Accident Lawyers Serving Virginia, including Albemarle, Charlottesville, Fluvanna, Louisa, Madison, Nelson, Orange, Greene, Augusta, Staunton, Waynesboro