Lane assist is more often annoying and dangerous than helpfull. It assumes lane markings are good/perfect, which over here is a very false premise.

▲

ninalanyon 2 days ago | parent [-]

If my ancient Model S can't see the road markings it won't engage lane keeping and makes a noise to alert you to that fact. Similarly when the lane markings disappear, it flashes a red warning in the instrument cluster and sounds an alarm.

	▲	PeterStuer a day ago \| parent [-]
		Will depend on the country I guess. Over here road markings around (former) roadworks often are literally swept across the lanes (when they use some temporary yellow adhesive lane marking stuff), or stay painted on long after the works have finished. In both cases, while mostly obvious to the human driver, following the lane markings would send you straight into the opposite lane.