The location of the occupants in the vehicle. More than one occupant can be assigned the same seating position; for example, in the case of a person sitting on someone's lap
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}