The NY Times article
here.

Cyclists have long had a rocky coexistence with motorists and
pedestrians, who often criticize bike riders for a confrontational attitude, and
for blowing through stop signs or otherwise exempting themselves from the rules
of the road. Now small cameras — the cycling equivalent of the black box on an
airplane — are becoming an intermediary in the relationship, providing high-tech
evidence in what is sometimes an ugly contest between people who ride the roads
on two wheels and those who use four.