Local Area Transportation Data

Local Area Transportation Characteristics by Household

Estimates of average weekday household person trips, vehicle trips, person miles traveled, and vehicle miles traveled (per day), for all Census tracts in the U.S.
Frequency: Updated when new NHTS data released
https://www.bts.gov/latch

Intermodal Passenger Connectivity Database

Nationwide database of passenger transportation facilities and docked bikeshare stations, with data on the availability of connections among the various scheduled public transportation modes at each facility.

Rural Accessibility

Percent of the rural population with access to scheduled air (commercial), intercity bus, and intercity rail transportation for the years 2006, 2012, and 2018.
https://datahub.transportation.gov/stories/s/gr9y-9gjq

General Transit Feed Specification 

Public transportation schedules and associated geographic information (static)