About 12,000 buses in Beijing have completed their Wi-Fi network card upgrades and opened services to all travelers in the nation's capital.

Wireless network bandwidth on the buses can reach 50M per second and the Wi-Fi network on a single bus can be used by at least 40 people at the same time. By accessing the hot spot named "16WiFi", passengers will be redirected to a website to download a Wi-Fi client. After completing the registration process, they will be able to surf the Internet or even play videos.

At present, Wi-Fi network cards on those buses are all 4G. Before the upgrade, they used mobile Wi-Fi routers with 3G network cards, which had problems like poor signal and network instability.

Though the system is still undergoing a stability debugging process, the buses already enabled the free use of Wi-Fi for passengers.