The odds of daytime vs. night-time pedestrian injuries did not change over the study period. No evidence for an effect of daytime running lights. Smooth front ends of vehicles compared to sharp ends. Pedestrian fatalities in US, 1982-1987. No significant effect on fatalities in non-frontal collisions.
Large population based study appears valid.
Unfortunately, no age-specific data. Federal Motor Vehicle Safety Standards for vehicles manufactured in or after 1968. New safety standards decreased risk of pedestrian deaths. No separate data for children. Summary of vehicle modification studies Modifications appear to reduce the risk of pedestrian fatalities.