Speed Assist Speed Assist How Speed Assist Works Warning: Do not rely on Speed Assist to determine the appropriate speed limit or Model X displays a speed limit on the driving speed. Always drive at a safe instrument panel and you can choose if and speed based on traffic and road how you are warned when you exceed the conditions. speed limit. Also, instead of using the detected speed limit, you can base warnings Controlling Speed Assist on an arbitrary speed limit that you enter manually. To adjust the Speed Limit Warning setting, touch Controls > Autopilot > Speed Limit Warning, then choose one of these options: • Off - Speed limit warnings do not display and chimes are not sounded. • Display - Speed limit signs display on the instrument panel and the sign increases in size when you exceed the determined limit. • Chime - In addition to the visual display, a chime is sounded whenever you exceed the determined speed limit. You can also specify how the speed limit is determined: • Relative - You can set a speed limit offset (+ or -) if you want to be alerted only when you exceed the offset speed limit by a specified amount. For example, you can increase the offset to +10 mph (10 km/h) if you only want to be warned when you exceed the speed limit by 10 mph (10 km/h). Note: The offset from speed limit also affects the number shown in the gray speedometer icon on the left side of the In situations where Model X is unable to driving speed on the instrument panel. determine a speed limit, or if Speed Assist is • Absolute - Manually specify any speed uncertain that an acquired speed limit is limit between 20 and 140 mph (30 and accurate, the instrument panel may not 240 km/h). display a speed limit sign and warnings do not Note: Speed Assist is not always accurate. A take effect. road's location can be miscalculated and If you set the speed limit warning to Display instead Speed Assist can display a speed for a (see Controlling Speed Assist on page 127) directly adjacent road that may have a and exceed the determined speed limit, the different speed limit. For example, Speed speed limit sign on the instrument panel Assist can assume Model X is on a freeway or increases in size. highway when it is actually on a nearby surface street, and vice versa. If you set the speed limit warning to Chime Note: Your chosen setting is retained until you (see Controlling Speed Assist on page 127) manually change it. It is also saved in your and exceed the determined speed limit, the driver profile. speed limit sign on the instrument panel increases in size and Model X also sounds a warning chime. Limitations and Inaccuracies Note: Speed limit warnings go away after ten Speed Assist may not be fully functional or seconds, or when Model X slows down below may provide inaccurate information in these the specified limit. situations: Autopilot 127