b. Break it down to many sub systems and identify the subsystem as "hard or soft or firm" real time system. c. Estimate the for each sub system: Response time, Guess the task execution time Task dead line Task arrival interval time Task is Periodic, aperiodic, or sporadic, Does the subsystem input/output depends on other subsystems? (classify as independent or dependent) Steering Wheel Vehicle Speed Windshield wiper Audio Warning (radio Visual Warning Side Radar (Left) Side Radar Vid Cam Collision Avoidance Electronic Control Unit 24Ghz 77 G Fron Rad Rear System Powertrain Electronic Control Unit Anti-lock Braking Electronic Control Unit Data Logg Electronic Cont Power Steering Electronic Control Unit Figure Complete "high-end" collision-avoidance system Forward Collision Warning (FCW) systems are based on camera or radar sensors monitoring the road ahead. They provide object recognition and detect relative speeds etween a vehicle and objects in the road. If the closing speed represents a risk of an mpending collision, drivers can be alerted through a number of warning methods