What critical capability does Adaptive Cruise Control (ACC) systems perform that Teetor's original concept did not?
Answer
Actively measuring the distance to the car immediately in front
ACC systems use sensors to measure the distance to the vehicle ahead, allowing them to automatically adjust speed to maintain a pre-selected following distance.

Related Questions
Who was the individual visionary credited with the inception of the technology that became cruise control?What unique physical circumstance defined Ralph Teetor's engineering career?In what year did the initial inspiration for the mechanical speed control system reportedly arise?How was the original iteration of speed regulation achieved?Which manufacturer first offered cruise control as a widespread consumer option in 1958?What was the initial marketing name given to the cruise control device by Chrysler?What technological shift enabled systems to become far more responsive than the older mechanical governors?What critical capability does Adaptive Cruise Control (ACC) systems perform that Teetor's original concept did not?What technology do modern ACC systems primarily use to monitor the traffic environment ahead?In the comparison between control philosophies, what is the primary goal of modern ACC?