-> Accident Analysis & Prevention published a paper that considered biannual clock changes resulting from transitions to and from daylight saving time were used to compare road traffic collisions (RTCs) in the UK during daylight and darkness but at the same time of day. Results suggested there was a significantly greater risk of a pedestrian RTC at a crossing after-dark than during daylight, and that the risk of an RTC after-dark was greater at a pedestrian crossing than at a location at least 50 m away from a crossing. This increased risk is not due to a lack of lighting at these locations as 98% of RTCs at pedestrian crossings after-dark were lit by road lighting. "The Effect of Ambient Light Condition on Road Traffic Collisions Involving Pedestrians on Pedestrian Crossings" http://bit.ly/2fOlnGo
from CenterLines, the e-newsletter of the National Center for Bicycling & Walking.