The Leaf's electric warning sound had to be removed for cars delivered in the U.K., as the country's law mandates that any hazard warning sound must be capable of being disabled between 11 00 pm and 6 00 am, and the Leaf's audible warning system does not allow for such temporary deactivation.
The Leaf's electric warning sound had to be removed for cars delivered in the UK, as the country's law mandates that any hazard warning sound must be capable of being disabled between 11 00 pm and 6 00 am, and the Leaf's audible warning system does not allow for such temporary deactivation.
Nissan had to delay the beginning of deliveries in order to remove the Leaf's electric warning sound for pedestrians, as UK law mandates that any hazard warning sound must be capable of being disabled between 11 00 pm and 6 00 am, and at that time the Leaf's audible warning system did not allow for such temporary deactivation.
In other setups, called forward collision warning systems, an audible alert sounds to warn drivers if the vehicle's sensors detect the an impending crash with the vehicle in front.
The current lane-departure system alerts drivers with an audible warning should they cross the line without signaling.
In the simplest warning systems, warning messages are delivered only as simple audible signals (drums, sirens, whistles, etc)., and the affected population must be informed beforehand about what the signals mean and what the appropriate response should be.
Starting with a simulation of the original tests this paper examines the characteristics of an audible warning that would meet current requirements for audibility at some foot crossings while at the same time minimising environmental impact.
One likely form is a collision-warning system, which senses when the truck is closing fast on another vehicle and gives a visual or audible warning; board experts cited a study by DaimlerChrysler that found that in cars, 60percentt of rear-end accidents could be avoided if the driver had half a second of extra warning time.
Second: put early warning systems in place.
Acoustic and chemical warning systems allow this.
