The contact owns a 2015 Hyundai Tucson. The contact stated that while driving in stop and go traffic, the braking system malfunctioned. The contact stated that while depressing the brake pedal to stop the vehicle, the pedal extended to the floor causing the vehicle to crash into the rear of a second vehicle. During the failure, the contact sustained an injured left forearm from the air bag deployment. No medical attention was required. A police report was filed at the scene and the vehicle was towed away. The contact stated that the driver in the other vehicle left the scene after the emergency services arrived. The contact was unaware of any injuries to the other driver. The cause of the failure was not yet determined. The local dealer and manufacturer were not yet contacted. The contact later received notification of the NHTSA Campaign Number: 22V056000 (Service Brakes, Hydraulic). The contact indicated that the vehicle had experienced the failure listed in the recall. The vehicle was not repaired. The VIN was not available. The failure mileage was approximately 96,000.