HB 502 -- Mobile Telephone Use Sponsor: Campbell This bill prohibits the use of a mobile telephone when operating a motor vehicle. Use of a hands-free mobile phone, using a phone when contacting emergency personnel, and the use of a phone by emergency personnel in the performance of their duties are excepted. Any person who violates this provision is guilty of a class C misdemeanor or, if an accident occurs, a class B misdemeanor. The bill has an effective date of July 1, 2004.Copyright (c) Missouri House of Representatives