Freeway Bureau data showed that the severest congestion occurred on the southbound lanes of Chiang Wei-shui Memorial Freeway (Freeway No. 5 would likely not alleviate until 8pm yesterday, whereas the amount of traffic on other freeways would gradually decrease after 4pm, it added. The southbound lanes of Chiang Wei-shui Memorial Freeway (Freeway No. 5) are pictured congested with traffic yesterday on the first day of the Dragon Boat Festival long weekend. “Congestion occurs when the volume of traffic increases by 20 percent in a short period of time, as it exceeds the capacity of the freeways.

Source: Taipei Times June 25, 2020 15:56 UTC