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Guidelines for Rescue Services Passenger Cars

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I wish every automaker would make a detailed extrication handbook for their vehicles. Most provide a basic guide for the hazards in their vehicles. However, Mercedes-Benz has gone above and beyond. Take a look at the link below. The Mercedes-Benz guide is 187 pages full of very useful information that can be used on other makes and models.

Guidelines for Rescue Services Passenger Cars

Below is an example of what the guide shows:

In the S-Class (model 221), certain areas of the Apillar are particularly well-suited to being cut through. Such areas are clearly designated with “CUT” marks in the windshield.

Cutting the A-pillar free in the area of the roof frame on this vehicle.

2011 BMW 5-Series Body Structure

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The 2011 BMW 5-Series body structure is an extremely stiff passenger cell with intelligent use of high-strength multi-phase steel and hot-moulded ultra-high-strength steel.  The A and B-pillars are made from hot stamped UHSS.  This would lead me to believe that there is some Boron in there.  The rear roof reinforcement and C-pillar is made from dual phase steel. 

An interesting side not on DP or Dual Phase steel.  Ron Moore from Firehouse.com told me that there is small DP steel that is being developed that will actually get stronger when we draw the metal toward the notch of our cutters.  Just something else to keep in the back of your mind.

2011 Hyundai Sonata UHSS

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The 2011 Hyundai Sonata is built with a hot stamped ultra-high-strength steel body structure.  The Sonata earned an Insurance Institute for Highway Safety (IIHS) TOP SAFETY PICK.  Keep in mind, that the new roof strength test is being used. This would mean you will be running into UHSS and the like.  Check back for locations on the vehicle but assume that the pillars and roof structure will have it.

2011 Chevrolet Cruze Safety Structure

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The core structure of the 2011 Chevrolet Cruze is a unitary construction fabricated from steel beams, pressings and box sections, with an overall torsional rigidity of 17.66 KNm/degree of deflection. About 65% of the structure is composed of high-strength steels (HSS), approximately 50% more than in its predecessor. About 30% more spot welds are also used throughout the structure.

Efficient load paths provide maximum occupant protection in the event of an impact from virtually any direction. Full-length beams and enhancements to the sills, B-pillars and A-pillars, through the use of high-strength steels and tailored blank processing, all contribute to the vehicle’s excellent crashworthiness.

The energy absorbing front and rear crumple zones are designed to deform as efficiently as possible in order to maintain the integrity of the passenger compartment, which is protected by a safety cage reinforced with tubular-section members that frame the door openings and support the roof. The combination of a single-piece side structure and ultra-high strength steel door beams also provides effective side impact protection.

The 2011 Cruze has a reinforced roof system built into the safety cage to pass the new roof strength tests required in the United States.

Be careful when working from the passenger side of the 2011 Cruze because there is a front passenger knee air bags.  There is also one on the driver side.

The 2011 Cruze is loaded from front to back, side to side with airbags.  There are airbags mounted in the front and outboard rear seats and in the roof rail houses the head-curtain side-impact air bags.

Source: Chevrolet

2010 Cadillac CTS Safety Cage and Body Structure

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The Cadillac CTS currently uses Advanced High Strength Steels in strategic structural locations.  One of Cadillac’s plans for the next Cadillac CTS refresh is to make the CTS one of the lightest cars in its class. One assumes they will do this through additional use of Aluminum, and high strength steel. The advantage of high strength steel is that for the same properties a thinner, lighter piece can be used that has the same or better strength and durability.

There is a 2-3% improvement in fuel economy for every 100 kg (220 lbs). So although the EPA cycle is complex, in general a 28 mpg CTS might break 30 mpg with the loss of around 500 lbs of weight from its 3,681 lb curb weight. Obviously there is a limit to the fuel economy that can be gained in this manner, since Cadillacs one can safely say will always have some weight. Cadillac’s goal of being the lightest in their vehicle class seems ideal. This goal is one that will have to be revisited in the crowded markets Cadillac competes in.

Cadillac CTS Safety Cage

The Cadillac CTS currently uses Advanced High Strength Steels in strategic structural locations.

2011 Ford Explorer Boron and Airbags

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2011 Ford Explorer

This is the first shot at providing body structure information on the new 2011 Ford Explorer.  Since Ford just released the images a few days ago it will take sometime for all the information to filter out that we need to know.  So keep checking back!

Boron in the Body Structure

The new Explorer combines – all at once – our best technologies to not only help prevent a crash, but to help prevent injuries to occupants when a crash is unavoidable,” said Erika Low, Ford safety supervisor. “The use of high-strength steels such as boron in the Explorer body structure also offers a greater level of protection, while meeting the most stringent roof crush standards.”

Rear Seat Belt Airbag

The 2011 Ford Explorer has a feature that first responders need to consider, inflatable rear seat belts.  Two important things to consider; cutting the seat belt and where is the airbag inflator module located?  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.