Tass makes software that can simulate complex traffic scenarios, validate autonomous driving and advanced driver assistance systems and replicate the impact of a car crash on a human body.

It has annual turnover of around 27 million euros ($32.3 million) and around 200 employees.

“Tass International is a proven leader in both integrated safety and autonomous driving, two fields of engineering that are increasingly important for the industry,” Siemens’ Digital Factory unit Chief Executive Jan Mrosik said in a statement.

Siemens said it would combine Tass’s software with its own advanced simulation products as well as electronic design capabilities from recently acquired Mentor Graphics.

Siemens bought Mentor Graphics for $4.5 billion earlier this year. It was its biggest industrial software acquisition.