WHILE DRIVING MY 2007 PRIUS IN A CONGESTED AREA, THE BRAKES DID NOT RESPOND WHEN DEPRESSED QUICKLY CONTRIBUTING OR CAUSING A LOW-SPEED COLLISION WITH THE VEHICLE IN FRONT OF ME. I FOUND THIS ARTICLE ON CNET REVIEWS THAT ACCURATELY MATCHES MY ISSUE. "TOYOTA REDESIGNED THE BRAKING SYSTEMS FOR THE 2010 PRIUS. THAT APPEARS TO BE TOYOTA'S RESPONSE TO THE FACT THAT THE U.S. GENERATION 2 PRIUS (2004-2009) HAS HAD LOW-SPEED BRAKE FAILURES REPORTED TO THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION (NHTSA) AT 31 TIMES THE RATE OF SUCH FAILURES REPORTED FOR THE 2004-2009 COROLLA, WHICH OF COURSE HAS TRADITIONAL BRAKES. MANY OF THE PRIUS LOW SPEED BRAKE FAILURES WERE IN LOW-SPEED CITY TRAFFIC, RESULTING IN REAR-END COLLISIONS WITHOUT INJURY. IT APPEARS THAT THE SEVERAL COMPUTERS THAT CONTROL THE COMPLEX BRAKING SYSTEMS WERE TOO BUSY CALCULATING THE MOST EFFICIENT WAY TO APPLY THE BRAKES, AND DID NOT GET AROUND TO ACTUALLY APPLYING THEM, UNTIL IT WAS TOO LATE." *TR