All thE Following ArE mEntionED As wAy AgAinst trAFFiC ACCiDEnts ExCEpt _________.
A．striCtEr Driving tEsts
B．BuilDing morE highwAys
C．tEsting DrivErs EvEry thrEE yEArs
D．rAising AgE limit AnD lAying Down sAFEty spECiFiCAtions