While you mentioned Dramacool, it is a third-party site. Season 2 consists of 16 episodes plus special recap content. Key Details for Season 2
You can find the series on official streaming services such as Prime Video and Viu (availability depends on your region). (Dramacool-SUB) Taxi Driver Season 2 (2023) Epi...
Lee Je-hoon returns as Kim Do-gi. Most of the original "Rainbow Taxi" team returns, with the addition of a new employee, On Ha-joon (played by Shin Jae-ha). While you mentioned Dramacool, it is a third-party site