The second study yields an average median lane deviation
of 2.660 m (SD=.847) for NM and 5.209 m (2.667) for FM
for all curves. Blind steering can only be safely achieved
for curves of 45 as NM has an average deviation of 1.457
(SD=1.100), which is small enough for a car to stay in their
lane on a two lane road. To contextualize these results, we
evaluated a driver’s ability to steer only using haptic feedback,
which is the most extreme case in which a driver is
blinded completely for the whole duration of driving through
the curve. Typically, glare from headlights takes an eye between
1-3 seconds to recover [5], but recovering from sunlight
(flash blindness) may take longer. In these specific contexts,
as the driver is only temporarily blinded and some residual
visual feedback may be available, we anticipate a better
performance for our interface than when no visual feedback
is available. As simulating a temporary blindness is subject
to many variables, we are confident study 2 and 3 accurately
identify an upper and lower bound on the performance of our
interface.