Posts Tagged ‘AAA Automotive Research Center’

ErinSteppAAA Tests Reveal Automatic Emergency Braking Systems Vary Significantly

ORLANDO, Fla (August 24, 2016) – New test results from AAA reveal that automatic emergency braking systems — the safety technology that will soon be standard equipment on 99 percent of vehicles — vary widely in design and performance. All the systems tested by AAA are designed to apply the brakes when a driver fails to engage, however, those that are designed to prevent crashes reduced vehicle speeds by nearly twice that of those designed to lessen crash severity. While any reduction in speed offers a significant safety benefit to drivers, AAA warns that automatic braking systems are not all designed to prevent collisions and urges consumers to fully understand system limitations before getting behind the wheel.

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“AAA found that two-thirds of Americans familiar with the technology believe that automatic emergency braking systems are designed to avoid crashes without driver intervention,” said John Nielsen, AAA’s managing director of Automotive Engineering and Repair. “The reality is that today’s systems vary greatly in performance, and many are not designed to stop a moving car.”

In partnership with the Automobile Club of Southern California’s Automotive Research Center, AAA evaluated five 2016 model-year vehicles equipped with automatic emergency braking systems for performance within system limitations and in real-world driving scenarios that were designed to push the technology’s limits. Systems were tested and compared based on the capabilities and limitations stated in the owner’s manuals and grouped into two categories — those designed to slow or stop the vehicle enough to prevent crashes, and those designed to slow the vehicle to lessen crash severity. After more than 70 trials, tests reveal:

  • In terms of overall speed reduction, the systems designed to prevent crashes reduced vehicle speeds by twice that of systems that are designed to only lessen crash severity (79 percent speed reduction vs. 40 percent speed reduction).
  • With speed differentials of under 30 mph, systems designed to prevent crashes successfully avoided collisions in 60 percent of test scenarios.
    • Surprisingly, the systems designed to only lessen crash severity were able to completely avoid crashes in nearly one-third (33 percent) of test scenarios.
  • When pushed beyond stated system limitations and proposed federal requirements, the variation among systems became more pronounced.
    • When traveling at 45 mph and approaching a static vehicle, the systems designed to prevent crashes reduced speeds by 74 percent overall and avoided crashes in 40 percent of scenarios. In contrast, systems designed to lessen crash severity were only able to reduce vehicle speed by 9 percent overall.

“Automatic emergency braking systems have the potential to drastically reduce the risk of injury from a crash,” said Megan McKernan, manager of the Automobile Club of Southern California’s Automotive Research Center. “When traveling at 30 mph, a speed reduction of just 10 mph can reduce the energy of crash impact by more than 50 percent.”

In addition to the independent testing, AAA surveyed U.S. drivers to understand consumer purchase habits and trust of automatic emergency braking systems. Results reveal:

  • Nine percent of U.S. drivers currently have automatic emergency braking on their vehicle.
  • Nearly 40 percent of U.S. drivers want automatic emergency braking on their next vehicle.
    • Men are more likely to want an automatic emergency braking system in their next vehicle (42 percent) than female drivers (35 percent).
  • Two out of five U.S. drivers trust automatic emergency braking to work.
    • Drivers who currently own a vehicle equipped with automatic emergency braking system are more likely to trust it to work (71 percent) compared to drivers that have not experienced the technology (41 percent).

“When shopping for a new vehicle, AAA recommends considering one equipped with an automatic emergency braking system,” continued Nielsen. “However, with the proliferation of vehicle technology, it’s more important than ever for drivers to fully understand their vehicle’s capabilities and limitations before driving off the dealer lot.”

For its potential to reduce crash severity, 20 automakers representing 99 percent of vehicle sales have committed to making automatic emergency braking systems standard on all new vehicles by 2022. The U.S. Department of Transportation said this voluntary agreement will make the safety feature available on new cars up to three years sooner than could be achieved through the formal regulatory process. According to the National Highway Traffic Safety Administration, rear-end collisions, which automatic emergency braking systems are designed to mitigate, result in nearly 2,000 fatalities and more than 500,000 injuries annually. Currently, 10 percent of new vehicles have automatic emergency braking as standard equipment, and more than half of new vehicles offer the feature as an option.

AAA’s testing of automatic emergency braking systems was conducted on a closed course at the Auto Club Speedway in Fontana, California. Using instrumented vehicles and a state-of the-art robotic “soft car” that allowed for collisions without vehicle damage, AAA collected vehicle separation, speed and deceleration data in a variety of crash scenarios designed to mirror real-world driving conditions. The testing was designed to build on previous testing by the Insurance Institute for Highway Safety. For additional information, visit NewsRoom.AAA.com.

As North America’s largest motoring and leisure travel organization, AAA provides more than 56 million members with travel, insurance, financial and automotive-related services. Since its founding in 1902, the not-for-profit, fully tax-paying AAA has been a leader and advocate for the safety and security of all travelers. Motorists can map a route, identify gas prices, find discounts, book a hotel and access AAA roadside assistance with the AAA Mobile app for iPhone, iPad and Android. Learn more at AAA.com/mobile. AAA clubs can be visited on the Internet at AAA.com.

Heather HunterNew study conducted by the AAA Automotive Research Center shows electric vehicle driving range can be nearly 60 percent lower in extreme cold and 33 percent lower in extreme heat.

ORLANDO, Fla., (March 20, 2014) – Electric Vehicles (EVs) are energy efficient and environmentally-friendly with the added benefit of reducing fuel costs for motorists. But, just as motorists need to know how far the gas in their tank will take them, EV drivers need to be aware of how far their vehicle can travel on a single charge. According to new AAA research conducted with the AAA Automotive Research Center in Southern California, electric vehicle range can be reduced by an average of 57 percent based on the temperature outside.

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“Electric motors provide smooth operation, strong acceleration, require less maintenance than internal combustion engines, and for many motorists offer a cost effective option,” said John Nielsen, managing director, AAA Automotive Engineering and Repair. “However, EV drivers need to carefully monitor driving range in hot and cold weather.”

To better understand the impact of climate on electric vehicle batteries, AAA conducted a simulation to measure the driving range of three fully-electric vehicles in cold, moderate and hot weather. Temperature made a big difference in driving range for all three EVs.

Vehicles were tested for city driving to mimic stop-and-go traffic, and to better compare with EPA ratings listed on the window sticker. The average EV battery range in AAA’s test was 105 miles at 75°F, but dropped 57 percent to 43 miles when the temperature was held steady at 20°F. Warm temperatures were less stressful on battery range, but still delivered a lower average of 69 miles per full charge at 95°F.

AAA performed testing between December 2013 and January 2014. Each vehicle completed a driving cycle for moderate, hot and cold climates following standard EPA-DOE test procedures. The vehicles were fully charged and then “driven” on a dynamometer in a climate-controlled room until the battery was fully exhausted.

AAA has initiated several projects including mobile recharging units and EV charging stations to support members who drive electric vehicles. EVs provide owners with many benefits, but every motorist needs to be aware of conditions that can impact vehicle driving range. EV drivers need to plan carefully in hot and cold weather. Mapping tools such as the AAA TripTik® Travel Planner pinpoint charging stations to keep motorists on the go.

Additional information regarding AAA’s electric vehicle testing is available on the AAA NewsRoom.

As North America’s largest motoring and leisure travel organization, AAA provides more than 54 million members with travel, insurance, financial and automotive-related services. Since its founding in 1902, the not-for-profit, fully tax-paying AAA has been a leader and advocate for the safety and security of all travelers. AAA clubs can be visited on the Internet at AAA.com.

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