A brave motorcyclist shattered a window to rescue two people trapped in a car after it flipped over in China.

the video was filmed in Chamdo in Tibet Autonomous Region on September 14.

Mr Zhang, the quick-thinking biker, described the harrowing scene he witnessed just moments before jumping into action. He was following the white SUV around a bend when, seemingly due to a steering mishap and a stretch of gravelly road, the SUV skidded and capsized.

"I didn't think twice," recalls Zhang. "I saw the accident unfold right in front of me. The vehicle's door was jammed, so I did my best to rip out the front windshield."

"Considering we were at an altitude of over 3,000 metres, there's always a risk of altitude sickness. And with the SUV smoking, I was really concerned it might catch fire."

As the situation grew more perilous with smoke emanating from the wrecked SUV, Zhang flagged down passersby to assist in his rescue mission. Together, they managed to free the two occupants trapped inside.

Thankfully, both passengers suffered only minor injuries. By the time the authorities arrived at the crash site, the modest hero had already left the scene, continuing on his journey.

The video was provided by local media with permission.

9月14日，西藏昌都，一小伙在318国道骑行时遇前方SUV发生车祸，随即上前救援。当事人张先生称，自己目击了车祸过程，转弯时自己跟在白色SUV后方，SUV可能是方向盘没打过来，压到小碎石打滑翻车。施救时因为车门无法打开，只能尽力撕开前挡风玻璃，救援过程中自己还招呼路人帮忙，一并上前将车内两人救出，车内两人伤势并不严重，现场有人报警后自己便离去。张先生表示，第一次遇到这种事，当时没想那么多，看到后本能上前帮忙，当时海拔三千以上，很容易出现高反，看到车辆冒烟时也很紧张担心起火，希望大家跑318国道时谨慎驾驶，