In November 2015, Transport for New South Wales (TfNSW) announced the construction of a 27 kilometre bus rapid transit network between Newport on the Northern Beaches and the Sydney central business district.

A planned extension to Newport was later cancelled following opposition from local residents with concerns that improved public transport infrastructure would be used to justify new high density housing developments.

[10] On 20 December 2020, the B-Line commenced operating 24-hours a day, extended between midnight and 5am to the Queen Victoria Building as route BN1.

[13] Due to a large number of bus drivers leaving, severe cancellations and wait times are commonplace on the route.

[14] In 2024, Transport for NSW has changed the schedule of the popular B-Line bus services and added extra buses to address the fleet's wear and tear concerns.

[23] The Spit Junction citybound bus stop is located on a newly built pedestrian plaza on Clifford Street.

The Manly Vale B-Line commuter car park consists of a three-stories structure which has 150 spaces and incorporates around 9000 plants in a breathing green wall, helping to reduce air pollutants for nearby residents.

The northbound bus stop is located on Pittwater Road, adjacent to Westfield Warringah Mall shopping centre.

Commuters can change here for bus services to Chatswood, Frenchs Forest, Cromer, Narraweena, Collaroy Plateau and Wheeler Heights.

[30] The Collaroy citybound bus stop is located on Pittwater Road, alongside the historic Arlington Amusement Hall.

Commuters can change here for bus services towards Macquarie Centre, Gordon, Terrey Hills, McCarrs Creek & Palm Beach.