https://ojp.gov/ncjrs/virtual-library/abstracts/policing-inter-community-mass-transit-systems-proposed-legislation
POLICING INTER-COMMUNITY MASS TRANSIT SYSTEMS - PROPOSED LEGISLATION FOR CHICAGO WITH A...
mass transit systems
https://www.ceicdata.com/en/united-states/nipa-1999-personal-consumption-expenditure/gdp-pce-se-transport-local-mass-transit-systems
United States GDP: PCE: SE: Transport: Local: Mass Transit Systems | Economic Indicators | CEIC
United States GDP: PCE: SE: Transport: Local: Mass Transit Systems data was reported at 10.327 USD bn in Oct 2003. This records an increase from the previous...
united states gdpmass transit systems