California enacts restrictions on cellphone use in cars

California became the fifth state to require that cell phone callers use a headset and the 14th state to prohibit persons under 18 from using a cellphone while driving.  In previous entries on this blog, we have discussed the research demonstrating how unsafe it is to "multi-task" using cell phones while driving.  California's half-measure does not address the intellectual component of the safety problem, but it does at least simplify the task of using a phone.