def snap_to_roads(client, path, interpolate=False):
    """Snaps a path to the most likely roads travelled.

    Takes up to 100 GPS points collected along a route, and returns a similar
    set of data with the points snapped to the most likely roads the vehicle
    was traveling along.

    :param path: The path to be snapped.
    :type path: a single location, or a list of locations, where a
        location is a string, dict, list, or tuple

    :param interpolate: Whether to interpolate a path to include all points
        forming the full road-geometry. When true, additional interpolated
        points will also be returned, resulting in a path that smoothly follows
        the geometry of the road, even around corners and through tunnels.
        Interpolated paths may contain more points than the original path.
    :type interpolate: bool

    :rtype: A list of snapped points.
    """

    params = {"path": convert.location_list(path)}

    if interpolate:
        params["interpolate"] = "true"

    return client._request("/v1/snapToRoads", params,
                       base_url=_ROADS_BASE_URL,
                       accepts_clientid=False,
                       extract_body=_roads_extract).get("snappedPoints", [])
Snaps a path to the most likely roads travelled.

    Takes up to 100 GPS points collected along a route, and returns a similar
    set of data with the points snapped to the most likely roads the vehicle
    was traveling along.

    :param path: The path to be snapped.
    :type path: a single location, or a list of locations, where a
        location is a string, dict, list, or tuple

    :param interpolate: Whether to interpolate a path to include all points
        forming the full road-geometry. When true, additional interpolated
        points will also be returned, resulting in a path that smoothly follows
        the geometry of the road, even around corners and through tunnels.
        Interpolated paths may contain more points than the original path.
    :type interpolate: bool

    :rtype: A list of snapped points.
    
googlemaps/roads.py