Simplify the following text for a Grade 16 native English-speaking person.
Original: It was founded in 1 September 1995 , by merging four agencies , namely , Registry of Vehicles , Mass Rapid Transit Corporation , Roads & Transportation Division of the Public Works Department of Singapore and Land Transport Division of the then-Ministry of Communications .
Simplified: It was founded in 1 September 1995 , by merging four agencies , which are Registry of Vehicles , Mass Rapid Transit Corporation , Roads & Transportation Division of the Public Works Department of Singapore and Land Transport Division of the then-Ministry of Communications .