A hydrogen tanker crashed on an elevated section of National Freeway 3 in Changhua City, killing the driver, and causing a massive explosion after the tank unit plunged more than 20 meters onto a road below. At around 12:20 am, the southbound tanker crashed into the guardrail on a ring ramp leading to Freeway 1 at the Changhua System interchange. The impact of the crash caused the tank unit to separate from the chassis of the vehicle. The tank unit