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MIT engineers help fight roadside perils

Aim to cut crashes at traffic stops, accident scenes

MIT scientists seek ways to prevent police officers on traffic stops from being struck by motorists.

Officers accidentally killed by a vehicle in the US

Challenge

Can a laser project the image far enough behind the car? What kind of image will work best? Will such a display work in bad weather?

Challenge

The system must be able to distinguish between a fast-moving car that would pass harmlessly and one that is likely to strike the officer.

SOURCES: MIT, The Federal Bureau of Investigation

Monica Ulmanu and Hiawatha Bray/Globe Staff