Effective 10/1/2003, children under age 6 regardless of weight, or under 40 pounds, regardless of age must be in safety or booster seat. Previously, requirement was under age 4 or under 40 pounds - the age limit has changed. Some more info at
http://www.sha.state.md.us/Safety/oots/ ... ildpas.asp(oops, typo in topic title. Apparently forum software doesn't let me edit that once it's been indexed. )