One good example of this type of plan is the city of Los Angeles' "Urban Mobility Plan in a Digital Age" that re-orients the focus to Mobility as a Service. Where frequent accessible buses and on-street hail taxis are available, licensed ride services must not erode overall levels of accessible transport. App-based ride services can improve overall accessibility by better matching supply of accessible vehicles and demand - but only if the design of the service and of the partnership takes into account the specific needs of travellers with impairments. By undertaking inventories of existing public transport routes to examine the potential for alternative service delivery models, public authorities and public transport operators can evaluate where synergies with innovative mobility services are strongest.