A Delphi Automotive Systems study on the effectiveness of adjustable pedals use confirmed those common-sense suspicions. And engineers have ideas for improving future designs. But women and short-statured occupants felt more comfortable moving away from the air bag. Most experts recommend drivers position themselves at least 10 inches from the steering wheel. Another benefit was that adjustable pedals tended to reduce foot and ankle injuries be reducing heel lifting movements.
Automakers say that adjustable pedal use is likely to grow.
Teleflex Automotive Group, a major producer of adjustable pedal system, said its production has increased from 30,000 units in 1998 to more than 2 million this year. Still there are some disadvantages to adjustable pedals, Parenteau said. Test participants, including a woman nine-months pregnant, said they felt limited by several factors. As they moved their seat rearward, their visibility became obstructed by the rim of the steering wheel. Also, they had to stretch their arms more to reach the steering wheel.