Nissan will install tire-pressure-measuring systems on its Quest and Altima vehicles that alert the driver filling the tire when it reaches an acceptable level.
Most
people don't carry a tire-pressure gauge in their car. A new federal
study shows that underinflated tires triple the risk of an accident. Low
tires affect braking, accelerating, cornering and fuel economy.
People
might be overconfident, considering that almost everyone has a
tire-pressure-monitoring system in their car, as long as it's less than
five years old. The government mandated the technology in 2005, but it
wasn't required until September 2007. Unfortunately, those systems only
tell the driver when the tire is low. Most don't say how low, or let the
driver know whether he's overfilled the tire.
Nissan's system
uses the car's four-way flashers to let the driver know air is coming
in. Once the tire is full, the horn beeps once. If the driver puts in
too much air, the lights blink faster and the horn beeps three times.
When the tire is deflated to a proper level, the horn chirps one more
time.
“It's one of those simple slap-your-forehead moments, as to
why someone has not thought of it before,” said Vishnu Jayamohan of
Nissan product planning and advanced strategy.
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