Continued operation of unsafe motor vehicles

Nature 
Preventive maintenance and corrective repairs for motor vehicles are frequently inadequate, and a substantial number of vehicles are operated on public thoroughfares in an unsafe condition. International road traffic is impeded by a lack of universal safety standards.
Incidence 
Commonly existing discrepancies between national safety standards allow for: unsafe, worn tyres; inadequate headlamps, passing and signal lights; and the absence of other safety features such as belts, roll bars, and fire extinguishers.
Aggravates 
Unsafe transport [in 2 loops]
Road traffic accidents [in 4 loops]
Strategy(ies) 
Value(s) 
Type 
(E) Emanations of other problems