Complex sentence: Various seating configurations were available, with Transport for London (TfL) specification models, fitted with a central exit door, typically having 45 seats on the upper deck, and between 17 (on the DAF DB250) and 22 seats on the lower deck.
Split into simpler sentences: Various seating configurations were available, with Transport for London (TfL) specification models, fitted with a central exit door. There are typically 45 seats on the upper deck, and between 17 (on the DAF DB250) and 22 seats on the lower deck.