ISOFIX is the international standard for attachment points for child safety seats in passenger cars. The system has other regional names including LATCH ("Lower Anchors and Tethers for Children") in the United States and LUAS ("Lower Universal Anchorage System") or Canfix in Canada. It has also been called the "Universal Child Safety Seat System" or UCSSS.
ISOFIX is International Organisation for Standardisation standard ISO 13216, which specifies the anchoring system for Group 1 child safety seats. It defines standard attachment points to be manufactured into cars, enabling compliant child safety seats to be quickly and safely secured. ISOFIX is an alternative to securing the seat with seat belts. Seats are secured with a single attachment at the top (top tether) and two attachments at the base of each side of the seat. The full set of anchor points for this system were required in new cars in the United States starting in September 2002.
In the EU the system is known as ISOFIX and covers both Group 0/0+ and Group 1 child safety seats. The mechanism for attaching the seat to the Lower Anchors is quite different from that in the United States. In the EU two "alligator-like" clips connect the seat to the Lower Anchors rather than the open clip style connectors commonly used in the United States. However, some carseat manufactures are beginning to offer true ISOFIX type attachments in the U.S. In the European standard, there are also various installation categories: "universal", "vehicle-specific" and "semi-universal". The main difference is that "Universal" represents use of a top tether strap with the ISOFIX anchorage, "vehicle-specific" represents the usage of the ISOFIX anchorage without the TopTether in specified vehicles only, while "Semi-Universal" represents usage of the ISOFIX anchorage together with a "foot-prop".
Isofix is designed to secure a maximum combined weight (Weight of both seat and child) of 65lbs (approximately 29.5 kg).
The center-to-center distance between the anchors of ISOFIX (and also LATCH) systems is 280 mm.
For Group 2/3 seats there is a system called ISOFIT which anchors the seat to the vehicle so it cannot slide around when not in use. In the case of Isofit, the child is held into the seat using the vehicle's existing seat belt system, not the safety seat's straps.
On September 19, 2014, the Australian government legalized the use of ISOFIX child seats. Prior to this date, their sale (and use) in Australia was illegal.
Early 2015 a new application for isofix system came to market. It is called fixeta, and is the first ISOFIX / LATCH carry-on suitcase in the market. Using this product you can carry secure and easy your luggage on your backseats and ampler your trunk.
Under the current UN/ECE R14, all new vehicles produced since February 2013 are required to have ISOFIX lower anchorages and top tether attachments.
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- Child Safety EU
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- The AA: Child Safety
- Article on LATCH from KeepKidsHealthy.com
- Fixeta. A simple suitcase, with ISOFIX
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