Effective August 8, 2017 (82 FR 37038) the Federal Motor Carrier Safety Administration (FMCSA) and Federal Railroad Administration (FRA) (collectively, the Agencies) withdrew the March 10, 2016, advance notice of proposed rulemaking (ANPRM) concerning the prevalence of moderate-to-severe obstructive sleep apnea (OSA) among individuals occupying safety sensitive positions in highway and rail transportation, and its potential consequences for the safety of highway and rail transportation. The Agencies have determined not to issue a notice of proposed rulemaking at this time. As of August 8, 2017 the ANPRM published on March 10, 2016, at 81 FR 12642 is withdrawn. OSA remains an on-going concern for the Agencies and the motor carrier and railroad industries because it can cause unintended sleep episodes and resulting deficits in attention, concentration, situational awareness, and memory, thus reducing the capacity to safely respond to hazards when performing safety sensitive duties. Therefore, the Agencies believe that current safety programs and FRA's rulemaking addressing fatigue risk management are the appropriate avenues to address OSA at this time.