toyota thums v4 01

Despite having announced that it had come up with a fifth-gen example of its Total Human Model for Safety (THUMS) virtual crash test dummy software last year, Toyota’s Version 4 series is still very much a front-line offering, as new additions to the line-up confirm.

The automaker says it has added three new models to its fourth-gen example, and these represent children aged 10, six, and three. The 10-year old (138 cm tall), six-year old (118 cm tall) and three-year old (94 cm tall) additions to THUMS – which allows injuries sustained by human bodies during vehicle crashes to be simulated on computer – represent the average physiques of children at each respective age.

They join the large male (189 cm tall), average-build adult male (179 cm tall) and small female (153 cm tall) models that are already being sold. The automaker says that the new models will come in two versions (passenger and pedestrian) for a total of six new additions to the THUMS line-up. This expanded line-up takes into consideration the influence of age and physique, and allows for a more thorough injury analysis.

The first THUMS was launched in 2000, followed by Version 2 in 2003, which added faces and bone structure to the models. The third-gen came about in 2008, adding a detailed model of the human brain. In 2010, Version 4 was upgraded with detailed modeling of the brain and also the addition of internal organs and their placement and interaction within the body. Last year, Version 5 introduced simulated musculature, allowing the models to assume the same bracing positions that a human might just before a crash.

The newly-launched child-spec models were created in the US as a result of collaborative research between Wayne State University, the University of Michigan and the Collaborative Safety Research Center, which is located in the Toyota Technical Center in Ann Arbor, Michigan.