Serious crashes in the county fell by 0% between 2010-12 and 2013-15.
Unless road safety is improved, Hertfordshire will fall short of international targets to halve road deaths within a decade.
From the High Street South (traffic lights outside Chiltern School) to the M1 (J9)
12 serious crashes between 2013 and 2015
from the A10/B1502/A414 junction to the A10/B156/A1170 junction/roundabout
71% reduction in serious crashes