KNOXVILLE—David Clarke, director of the Center for Transportation Research at the University of Tennessee, Knoxville, is available to answer questions and provide insight as the investigation report relating to last May's fatal Amtrak crash near Philadelphia is released.

Considered one of the foremost experts of trains and train safety in the United States, Clarke has been consulted by the Associated Press, NBC News, USA Today and the Boston Globe, among others, following previous rail incidents and investigations.

He is currently in Minnesota teaching a track safety course, but can be reached by cell phone for anyone interested in rail safety, track issues and anything that develops between now and then.

His phone number is 864-637-8202.