SHENZHEN - Yawning, eyelids sagging, nodding off - in the future, these signs of exhaustion will be captured and a warning to stop driving will sound. The on-board artificial intelligence system collects information of facial expressions, computes, and tells the driver to pull over.

"AI may someday help eradicate accidents caused by fatigue," said Ye Jianjie of Sense Time, developer of the system.

At the 19th China Hi-tech Fair that closed on Tuesday in Shenzhen, AI products were on display that may change the path of transportation forever, making traffic safer and roads less congested.