Just in from road testing the STS,,, and wow,, this thing put a smile on my face !! I rode for an hour,,, testing various turns,,, lane changes and delays. I could only fool it on a lane change by moving so gradually that it was not really good driving. Everything else was spot on. I am impressed,,, but will continue to evaluate. Reliability of the unit can only be tested over time. Sorting out my turn signal switch was critical to the successful install,,,, cheers,, Cat'