COLUMBIA, MO-Since 1975, more than 100,000 motorcycle riders in America have died in crashes. The majority of states required motorcycle helmets in 1975, but today, only 20 states have universal helmet laws that require all riders to wear helmets, 26 states have partial coverage laws (usually only for young riders), and four states have no helmet laws. A recent study by a University of Missouri professor found that the motorcyclist fatality rate has increased in states that repealed their universal helmet laws during the past decade.

Lilliard Richardson, professor in the MU Truman School of Public Affairs, and David J. Houston, associate professor at the University of Tennessee, Knoxville, ...

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