Public Shuttle to Ferry/Rail

I know private shuttles do not count, and the LEED credit language emphasizes walking distance; however, can you count the trips at a ferry station and train station that are accessible through publically available shuttles that pick up/drop off within 1/2 mile walking distance of the project site and are only used to shuttle people between dense office development and public transit? I believe this still supports the intent of this credit by having people take public transit instead of driving. Thanks for any insight!