Development and Testing of Road Signs Alert System Using a Smart Mobile Phone

Table 5

Nonfunctional requirements.

Requirement category	Requirement description
Security	The system should authenticate users
Response time	The system should respond quickly to user's request
Reliability	The system should perform the intended tasks for a specific time
Usability	The system should be easy to install and simple to use
Scalability	The system should be able to add new features
Robustness	The system should function under different circumstances of disturbance
Operating system	The system should be platform-independent, i.e., android OS
Portability	The system should operate on android smart devices such as Android car kit TV, android smartphones, android tablets
Availability	The system should be available all the time when required
Performance	The system should perform well under different conditions