3 ms·

Another example of data usually missing - speed limits.

• clicks 17y ago
  My uncle from Germany who visited me last month showed me his Garmin GPS -- it reported speed limits instantaneously. Anyway, tagging speed limits with roads is one of the less difficult things in computing turn-by-turn directions, I would guess. It's just a matter of getting the data from whatever branch of gov't that has it -- (out of curiosity - if anyone knows, do tell, who exactly would be queried for such data? And what would be the logistics of it? Only acquirable for a certain fee?).
  • wooster 17y ago
    Most governments other than the US charge enormous amounts of money for map data, with very tight restrictions on licensing. Many consider it a state secret, and won't sell the data at all.
  • jeremymcanally 17y ago
    My TomTom has that data for most places, and I'm from America. I think it just depends on the GPS model and the data provider.