Hi @sharynrichardso,

About the format GTFS has some links that can be useful for you.

Some examples:

Routing with GTFS

Using spatial etl tool to combine multiple gtfs into

Thanks,

Danilo

GTFS requires the spatial data to be in WGS 84 see the GTFS reference documentation. If your MapInfo Mitab data is not in a geographic coordinate system, then FME can re-project it for you. All you probably need to do is set the Coordinate System on the GTFS writer to LL-WGS84. Documentation on the FME GTFS writer is here