africanpompano|World Intelligent Driving Challenge 2024 held in Tianjin

A vehicle is seen at a closed test road during the World Intelligent Driving Challenge 2024 in Dongli District of north China's Tianjinafricanpompano, June 18, 2024africanpompano. This year's event set up challenges including information security attack and defense, real car intelligent network competition, mass production application challenge, etc., which attracted 109 teams from universities and enterprises across the country. (Xinhua/Sun Fanyue)

The referees score the results of each stage of the participating vehicles on the referee car during the World Intelligent Driving Challenge 2024 in Dongli District of north China's Tianjin, June 18, 2024. (Xinhua/Sun Fanyue)

A participant inspects a vehicle before departure at a closed test road during the World Intelligent Driving Challenge 2024 in Dongli District of north China's Tianjin, June 18, 2024. (Xinhua/Sun Fanyue)

Vehicles wait for departure at a closed test road during the World Intelligent Driving Challenge 2024 in Dongli District of north China's Tianjin, June 18, 2024. (Xinhua/Sun Fanyue)

A vehicle enters a smoggy area at a closed test road during the World Intelligent Driving Challenge 2024 in Dongli District of north China's Tianjin, June 18, 2024. (Xinhua/Sun Fanyue)

A referee communicates with a participant at a closed test road during the World Intelligent Driving Challenge 2024 in Dongli District of north China's Tianjin, June 18, 2024. (Xinhua/Sun Fanyue)

A staff member installs a simulated pedestrian during the World Intelligent Driving Challenge 2024 in Dongli District of north China's Tianjin, June 18, 2024.(Xinhua/Sun Fanyue)

A vehicle waits for departure at a closed test road during the World Intelligent Driving Challenge 2024 in Dongli District of north China's Tianjin, June 18, 2024. (Xinhua/Sun Fanyue)

Vehicles go through a simulated pedestrian avoidance test at a closed test road during the World Intelligent Driving Challenge 2024 in Dongli District of north China's Tianjin, June 18, 2024. (Xinhua/Sun Fanyue)

A vehicle goes through a simulated pedestrian avoidance test at a closed test road during the World Intelligent Driving Challenge 2024 in Dongli District of north China's Tianjin, June 18, 2024. (Xinhua/Sun Fanyue)