https://www.scconline.com/blog/post/2022/11/16/supreme-court-upholds-constitutional-validity-state-amendments-repugnancy-central-act-legal-news-legal-updates-welfare-legislation/
Explained| Why Supreme Court upheld the constitutionality of the Kerala MV Taxation (Amendment) Act, 2005, & the Kerala Motor Transport Workers' Welfare Fund (Amendment) Act, 2005