A blue passenger car caught fire while traveling through the Shuto Expressway Yamanote Tunnel in Tokyo this month [1, 2].
The incident highlights the critical danger of vehicle overheating during summer months, as fires in enclosed tunnels can rapidly escalate and obstruct emergency access for other motorists.
Footage of the incident, recorded July 13 [1], shows a large flame engulfing the vehicle within about one and a half minutes [1]. The fire occurred within the Yamanote Tunnel of the Shuto Expressway Central Loop [2]. While one report suggested the event took place July 18 at 12:36 JST [2], the video record dates the fire to July 13 [1].
Shuto Expressway officials said overheating was a likely cause of the blaze [1]. A spokesperson for the authority said that when outside temperatures rise, the efficiency of engine cooling systems decreases, making such fires more frequent [1].
This event follows a safety notice issued by the Shuto Expressway June 12 [3]. In that communication, the authority asked for cooperation regarding tunnel disaster prevention [3]. Officials are now urging drivers to perform regular maintenance, and check coolant levels and other cooling-system components to prevent similar occurrences [1].
Witnesses described the scene as tense. Kosaka Daimaō said that a scary announcement was playing during the incident [2].
“A large flame engulfed the car within about 1.5 minutes.”
The recurrence of vehicle fires in Tokyo's tunnel network during peak summer heat underscores a systemic vulnerability in urban infrastructure. When high ambient temperatures combine with the restricted airflow of tunnels, engine overheating becomes a significant public safety risk that can lead to rapid vehicle incineration and massive traffic gridlock.
