 In her mandate letter, she was charged with eliminating tolls on the Port Mann and Golden Ears Bridges, and reviewing BC Ferries to freeze user fees and bring ferry ship-building back to British Columbia.Among other reforms, the 2017-18 government review of coastal ferry service operated by the independently managed BC Ferries led to Trevena introducing the "Coastal Ferry Amendment Act, 2019" which addes that the BC Ferry Authority must consider the public's interest in safe, reliable and affordable service in addition to the other factors.Also in that ministerial role, Trevena led the government's introduction of the "Passenger Transportation Amendment Act, 2018" that enabled ride-hailing companies to enter into the BC market.