Traffic control system:

Subsystem Requirements and the Proposed Verification Method Stimulus and Pass/Fail criteria.
Power
● The power subsystem shall switch power output from electrical utility power to backup, battery power in no more than 10 ms when an interruption to electrical utility power is experienced. (Test)
Stimulus
Response
Pass/Fail
● The Power subsystem shall accept 240 VAC 60 Hz single phase power from the local electrical utility company. (Demonstration)
Stimulus
Response
Pass/Fail
● The Power subsystem shall notify the Local Processor subsystem when electrical utility power is interrupted. (Demonstration)
Stimulus
Response
Pass/Fail
Traffic Light Civil Structure
● Traffic Light Civil Structure shall operate at a temperature range of -75° to 150°Fahrenheit. (Test)
Stimulus
Response
Pass/Fail
● Traffic Light Civil Structure shall have a waterproof rating of IP65. (Test)
Stimulus
Response
Pass/Fail
● The traffic light civil structure shall withstand a Category 2 hurricane with sustained winds up to 112 mph winds. (Test)
Stimulus
Response
Pass/Fail
Local Processor
● The Local Processor shall provide heartbeat data every 3 seconds to the Control Center. (Test)
Stimulus
Response
Pass/Fail
● The Local Processor shall accept algorithms commands from the Control Center (Demonstration)
Stimulus
Response
Pass/Fail
● The Local Processor shall adjust traffic indicators according to software algorithms (Test)
Stimulus
Response
Pass/Fail
Communication
● The communication system shall have a data reliability of > 99%. (Test)
Stimulus
Response
Pass/Fail
● The communication system shall maintain 50% bandwidth margin under complete system usage. (Test)
Stimulus
Response
Pass/Fail
● The communication system shall be have a MTBF of greater than 5 years (Analysis)
Stimulus
Response
Pass/Fail
Control Center
● The Control Center shall provide an Accident Report upon Operator request. (Demonstration)
Stimulus
Response
Pass/Fail
● The Control Center shall provide real-time management controls of the network of traffic lights. (Demonstration of control of no less than 5 lights)
Stimulus
Response
Pass/Fail
● The Control Center shall notify the Operator of loss of communication to a traffic light.(Test)
Stimulus
Response
Pass/Fial