`vehicle_types` should be snake case. Like `long_distance` and `heavy_freight` before _Originally posted by @gwehrle in https://github.com/railtoolkit/schema/pull/23#discussion_r2273978152_
vehicle_typesshould be snake case. Likelong_distanceandheavy_freightbeforeOriginally posted by @gwehrle in #23 (comment)