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Sorry, mixed up. Somehow thought he/she was talking about the signs and such.
by Nullabillity 11y ago
Sorry, mixed up. Somehow thought he/she was talking about the signs and such.
- mikeash 11y agoGotcha. Cameras are good for those too. You can get speed limits and such from databases, but they may be out of date. A camera is guaranteed to see the latest every time. For an extreme example, the interstate closest to me has dynamic speed limits at peak times. My car can pick up the current limit with the camera, but a database lookup obviously couldn't.