I've been looking forward to this, as the speed limit data is missing or incorrect much of the time on rural Maine roads. There are a few where proper speed limits will slow me down, but it's far more common that the database will have it at 35 when it's a 50 zone, for example. Went on a drive just now to test and had very low success at night. In around 15 miles, it only caught the very last sign I passed, and that was only after I slowed to 20mph (in a 35 zone) when passing the sign. Hopefully it improves.