The accident occurred on National Highway 48 when the car lost control after a tyre burst, causing it to jump the divider and crash head-on into a roadways bus.
The victims, all passengers in the car, were on their way to the Kumbh Mela.
The 44-day Maha Kumbh Mela 2025 began on January 13 and will end on February 26, on the day of Maha Shivaratri.