A government inquiry will be launched into the New Generation Rollingstock trains, which have been criticised for disability access issues and various defects.
Premier Annastacia Palaszczuk announced retired District Court Judge Michael Forde will conduct an inquiry into the procurement of the trains, and their failure to comply with disability laws.
The $4.4 billion NGR trains, ordered by the Newman government in 2014, were delivered 18 months late and required an additional $150 million to fix major defects.