Original sentence: <ref name="iihs">.The Insurance Institute for Highway Safety found that the increase from 55 to 65 on rural roads lead to a 25% to 30% increase in deaths <ref name="iihs"> while the full repeal in 1995 lead to a further 15 percent increase to fatalities.The law's safety benefit, was estimated by the National Research Council to be about 4000 lives in 1974 relative to 1973
Edited sentence: Independent studies suggest savings as low as a half percent.Since the NMSL's repeal, annual road-related fatalities have continued to fall to historical lows despite steadily increasing speed limits.The law's safety benefit, as measured in annual fatalities, was short-lived and was possibly a statistical anomaly