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Engineering a safer world Trains are faster, more economical, safer and greener than cars and trucks. At Prover, we are committed to doing our part for a better world. We supply solutions for engineering the safety-critical systems that control train signals and switches. Prover is a Swedish company with subsidiaries in the US, France, China and Algeria. It is privately owned by investors and staff, and has customers all over the world. At Prover you will find a highly intelligent team, a respectful atmosphere and cultural diversity.