Welcome to the wonderful world of anglicisms ;) - Many of the English language OSM tags were developed in Merry Old before they came here to the states. There are several mappers that are trying to find a better translations into the existing tagging format based on the US Federal Highway Functional Classification system, but unless/until the highway=* tag gets extended again, the British tags are the ones to use.
Here's my current understanding of the tag types "highway" types = > 'residential' - Can drive on, it's the default from the 2007 TIGER > import if the road type wasn't coded correctly > 'track' - Paved road only 1 car-width wide. > 'trunk' - Non-Interstate freeways (no stoplights) > 'secondary' - Non-divided multi-lane roads (has stoplights, residential > roads might connect) > 'motorway_link' - on/off ramps to US Interstates > 'primary' - Divided multi-lane roads (has stoplights) > 'service' - Driveways, alleys, restricted-access roads, etc... > 'motorway' - US Interstates > 'tertiary' - 2-lane roads (has stopsigns, but few/no stoplights. > Mostly connected to by residential roads) > 'footway' - Sidewalk > 'unclassified' - Unknown status road. Might be passable by car, might > not. - see attributes > 'primary_link' - On/offramps to primary roads - not sure how often this > is used since TagWatch isn't covering the US right now > 'trunk_link' - On/Off ramps to Non-Interstate freeways > 'secondary_link' - On/offramps to secondary roads - not sure how often > this is used since TagWatch isn't covering the US right now > 'path' - Walking path > 'Driveway' - you park in a driveway, and drive on a parkway ;) > 'pedestrian' - Roads that have been closed to vehicle traffic. You see > these in downtown areas, especially > 'road' - unknown status road - probably passable by car. > >
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