PHMSA issued an advisory that clarifies the need to perform post accident drug and alcohol testing, within the mandated timelines of the regulations, of each covered employee whose performance either contributed to an accident/ incident or cannot be completely discounted as a contributing factor to an accident/ incident. The advisory was issued in response to one of the NTSB’s recommendations as a result of the San Bruno incident. Click here for the Advisory (published in the Federal Register on February 22, 2012).