I've noticed a new feature (I think) that displays the speed limit next to your actual speed. But on I-17 in Arizona, between Phoenix and Flagstaff, there are several areas where the limit either does not appear, or is incorrect. Specifically between mile markers (approximately) 278.5 and 286.5, the speed limit is 65. From 286.5 to about 338, it is 75. I'm not sure how to get this corrected.