spotchecks carried out on vehicles taking children to and from school led to seven being removed from the roads.
Operation Coachman has been running in Derbyshire for the last month with 70 vehicles checked outside schools across the county.
Taxis, coaches and buses used to transport children were examined to check they were roadworthy.
Of the 70 vehicles checked, 12 were found to have defects.
The faults included seatbelts not working properly, a loose door, and rusting on some of the vehicles.
Chief Inspector Steve Wilson, head of roads policing in Derbyshire, said: “We are pleased that fewer faults were found compared to last year’s checks, which shows road safety standards are improving.”