Speed Limits

Returns the posted speed limit for a given road segment. In the case of road segments with variable speed limits, the default speed limit for the segment is returned. The speed limits service is only available to Google Maps API Premium Plan customers with an Asset Tracking license.

google_speedLimits(df_path = NULL, lat = NULL, lon = NULL,
  placeIds = NULL, units = c("KPH", "MPH"), simplify = TRUE,
  curl_proxy = NULL, key = get_api_key("roads"))

Arguments

df_path	data.frame with at least two columns specifying the latitude & longitude coordinates, with a maximum of 100 pairs of coordinates.
lat	string specifying the latitude column
lon	string specifying the longitude column
placeIds	vector of Place IDs of the road segments. Place IDs are returned in response to google_snapToRoads and google_nearestRoads reqeusts. You can pass up to 100 placeIds at a time
units	Whether to return speed limits in kilometers or miles per hour
simplify	logical - TRUE indicates the returned JSON will be coerced into a list. FALSE indicates the returend JSON will be returned as a string
curl_proxy	a curl proxy object
key	string A valid Google Developers Places API key

Note

The accuracy of speed limit data returned by Google Maps Roads API can not be guaranteed. The speed limit data provided is not real-time, and may be estimated, inaccurate, incomplete, and / or outdated.