A lapse from wakefulness into sleep that lasts just a few seconds; often associated with excessive daytime sleepiness and automatic behaviour. Typically associated with nodding off
Transport Canada, 'Changing Transportation Behaviours', 'Rail Freight Service', 'Rail Safety and Emergency Glossary', 'Railway Operations Glossary', 'Road Traffic & Transportation Safety and Emergency Glossary', 'Safety Glossary', 'Transportation of Dangerous Goods Glossary, Ontario, Canada 2013. http://www.tc.gc.ca/eng/menu.htm, (Changing Transp Behaviours, Rail Freight Srvc, Rail Sfty and Emr, Railway Oper, Road Trfc and Transp Sfty and Emr, Transp of Dangerous Goods - Canad) {643}