LANSING (AP) -- Using cell phones to text or check e-mail while driving is coming under increasing scrutiny in Michigan. But lawmakers aren't sure how far they should go to crack down on the practice.

A Senate committee on Tuesday passed a bill that would make texting while driving a secondary offense. That means police first would need some other reason to pull over motorists before they could be cited for texting.

Senators aren't yet sure how large a fine they would be comfortable charging motorists for the offense.

A House committee passed a similar bill in October.

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