And while the movement against so-called “Super Speeders” is gaining momentum, some worry that mandatory ISA devices could introduce new, unintended safety risks. Intelligent Speed Assistance (ISA) systems differ in that they rely on a combination of the vehicle’s current speed and the posted speed limit. In theory, this should help avoid scenarios where a vehicle suddenly slams on the brakes upon entering an area with a lower speed limit. The race to slow down Super Speeders is onNew proposed legislation across U.S. states takes ISA technology into new legal territory by eliminating—or strictly limiting—certain drivers’ ability to simply ignore ISA warnings. Those in favor of judge-mandated ISA devices point to in-car breathalyzers as a historical analogue.