More on how it works here:
While not a replacement for these cuts, a new demand responsive travel (DRT) service called WESTlink launched in April to help connect communities to core transport routes across the region. This shared, flexible service enables passengers to pre-book a trip by specifying the time and desired pick-up and drop-off, via an App, the website or by phone.
WESTlink is currently being trialled in Knowle, Windmill Hill and Totterdown. Unlike dial-a-ride, where passengers can be picked up from their homes, WESTlink picks up and drops off passengers at bus stops.
I hadn't realised it was still based on bus stops!