Amtrak map showing service type and frequency by color and line thickness, accurate as for 2023
File:Amtrakfreqmapcolor_svg.svg
Blank_US_Map.svg by User:Theshibboleth; File:Amtrakfreqmap.svg by Samuell; File:Amtrakfreqmapcolor_svg.svg by PerryPlanet; Eldomtom2