3.1. Design objectives
The design ofthe NeverStop system was guided by the following
key design objectives:
(1) Usability: NeverStop is deployed at the intersections to manage
the traffic. For convenience, the administrators do not need
to be aware of the detailed implementation due to that the NeverStop
is automatically configured. Therefore what is required is
just “one-click” initialization. At the same time, administrator can
supervise all the intersections at the server side in case that an
accident happens.
(2)Reliability: as the systemisdesignedto operate withoutuser’s
intervention, it is extremely importantthatthe system runs reliably
and has the ability to handle unexpected situations.
(3) Extensibility: the NeverStop system is designed for efficient
expansion in big data era. To ensure maximum portability and versatility,
it is imperative that the device configuration settings be
remotely obtained. This will enable the NeverStop system to grow
into new markets easily.