Three men travelling in a speeding mini truck were killed and eight others injured when it skidded while manoeuvring a turn and turned turtle near Khirni village in Sawaimadhopur district.
The victims were returning from Niwai town when the incident occurred, police said.
In another mishap in Tonk district, a jeep rammed into a road side house after the driver lost control over it in a bid to save a pedestrian.
Three occupants of the jeep including a-year-old girl and the pedestrian were killed in the mishap and nine others were injured, police said, adding that condition of two injured was stated to be critical.