Simplify the following text for a Grade 6 native English-speaking person.
Original: Blackpool was the only town in the UK that retained its trams , and between 1962 and 1992 Blackpool had the only urban tramway in the UK .
Simplified: Blackpool was the only town in the UK that kept its trams . Between 1962 and 1992 Blackpool was the only town with a tramway in the UK that was not a preserved system .