Integer. These can be listed and described with the
routes function.
route_type
Optionally filter results by a route type. A route type can
be provided either as a non-negative integer code, or as a character:
"Tram", "Train", "Bus", "Vline" or "Night Bus". Character inputs are not
case-sensitive. Use the route_types function to extract a
vector of all route types.
date_utc
Date, or character that can be converted to a date. The
UTC date for which the results are effective. Defaults to the current date.
It's uncertain how much historical or future-dated data is available. This
argument is experimental and seems to not be functioning.
user_id
Integer or character. A user ID or devid provided by Public
Transport Victoria. Refer to ?ptvapi for more details.
api_key
Character. An API key, with dashes, provided by Public
Transport Victoria. Refer to ?ptvapi for more details.