Ford has long history of innovation in automotive safety. The company was first automaker to offer seat belts, and it was the first to begin air bag research. In fact, Ford has more than 50 years of continuous research and industry-firsts relating to these two key safety technologies alone. Ford carries on that spirit of safety innovation, announcing on November 5, 2009, that it is bringing to market the world’s first automotive inflatable seat belts. This technology combines the attributes of traditional seat belts and air bags to provide an added level of crash safety protection for rear seat occupants.
This new and advanced restraint system is designed to help reduce head, neck and chest injuries for rear seat passengers, often children and older passengers who can be more vulnerable to such injuries.
Ford will introduce inflatable rear seat belts on the next-generation Ford Explorer, which goes into production next year for the North American market. Over time, Ford plans to offer the technology in vehicles globally.
“Ford’s rear inflatable seat belt technology will enhance safety for rear-seat passengers of all ages, especially for young children who are more vulnerable in crashes,” said Sue Cischke, Ford group vice president of Sustainability, Environmental and Safety Engineering. “This is another unique family technology that builds on our safety leadership, including the most top safety ratings of any automaker.”
This video explains how the new inflatable safety belts function.
Safer and more comfortable
Advances in air bag inflation and seat belt construction methods have enabled Ford and its suppliers to develop inflatable seat belts that are designed to deploy over a vehicle occupant’s torso and shoulder in 40 milliseconds in the event of a crash.
In everyday use, the inflatable belts operate like conventional seat belts and are safe and compatible with infant and children safety car and booster seats. In Ford’s research, more than 90 percent of those who tested the inflatable seat belts found them to be similar to or more comfortable than a conventional belt because they feel padded and softer. That comfort factor could help improve the 61 percent rear belt usage rate in the U.S., which compares to 82 percent usage by front seat passengers, according to National Highway Traffic Safety Administration data.
In the event of a frontal or side crash, the inflatable belt’s increased diameter more effectively holds the occupant in the appropriate seating position, helping to reduce the risk of injury.
Vehicle safety sensors determine the severity of the collision in the blink of an eye and deploy the inflatable belts’ air bags. Each belt’s tubular air bag inflates with cold compressed gas, which flows through a specially designed buckle from a cylinder housed below the seat.
The inflatable belt’s accordion-folded bag breaks through the belt fabric as it fills with air, expanding sideways across the occupant’s body in about the same amount of time it takes a car traveling at highway speed to cover a yard of distance.
The use of cold compressed gas instead of a heat-generating chemical reaction – which is typical of traditional air bag systems – means the inflated belts feel no warmer on the wearer’s body than the ambient temperature. The inflatable belts also fill at a lower pressure and a slower rate than traditional air bags, because the device does not need to close a gap between the belt and the occupant.
The inflated belt helps distribute crash force energy across five times more of the occupant’s torso than a traditional belt, which expands its range of protection and reduces risk of injury by diffusing crash pressure over a larger area, while providing additional support to the head and neck. After deployment, the belt remains inflated for several seconds before dispersing its air through the pores of the air bag.
Ford’s safety leadership record continues to grow
The inflatable seat belt debuting on the next-generation Ford Explorer continues Ford’s record of safety innovation. Ford today has more 5-star U.S. government ratings and “Top Safety Picks” from the Insurance Institute for Highway Safety than any other automaker.
Ford was the first automaker to introduce seat belts in 1955 and led the way in making driver and front-passenger air bags standard in most vehicles by 1993.
This year, Ford introduced radar-enabled Adaptive Cruise Control with Collision Warning with Brake Support and Blind Spot Information System (BLIS®) with Cross Traffic Alert (CTA). These technologies – introduced on the new 2010 Ford Taurus and Fusion – help drivers avoid potential dangerous crash situations using radar to detect the relative position of other vehicles and warn the driver with a combination of visual and audio alerts.