Before revision: Navigation systems may be capable of one or more of: containing maps, which may be displayed in a format via text or in a graphical format determining a vehicle or vessel's location via sensors, maps, or information from external sources providing suggested directions to a human in charge of a vehicle or vessel via text or speech providing directions directly to an autonomous vehicle such as a robotic probe or guided missile providing information on nearby vehicles or vessels, or other hazards or obstacles providing information on traffic conditions and suggesting alternative directions simultaneous localization and mappingDissanayake, MWM Gamini, et al.
After revision: Navigation systems may be capable of one or more of: containing maps, which may be displayed in a format via text or in a graphical format determining a vehicle or vessel's location via sensors, maps, or information from external sources providing suggested routes to the navigator providing directions directly to an autonomous vehicle such as a robotic probe or guided missile providing information on nearby vehicles or vessels, or other hazards or obstacles providing information on traffic conditions and suggesting alternative directions simultaneous localization and mappingDissanayake, MWM Gamini, et al.