The American Transportation Research Institute has released an updated version of its listing of state and local idling regulations, which can be accessed as a cab card or on the Web.

The new listing includes updates to idling laws in Missouri, new limits in several Texas cities and counties, and a stricter limit adjacent to public schools in New York City.

Specific changes include:

* A law in St. Louis, Mo., that lowers the idling limit from 10 minutes to five minutes and adds several operational exemptions.

* A new five-minute idling limit in the Missouri counties of Clay, Franklin, Jackson, Jefferson, Platte, St. Charles and St. Louis.

* Implementing the state's five-minute idling limit from April through October in several areas of Texas, including the cities of Arlington, Benbrook, Celina, Colleyville, Dallas, Euless, Georgetown, Hurst, Hutto, Keene, Lake Worth, Lancaster, Little Elm, Luling, Mabank, McKinney, Mesquite, North Richland Hills, Pecan Hill, University Park and Westlake. The restriction will also go into effect in the counties of Collin, Kaufman and Tarrant.

* A regulation in New York City that limits idling adjacent to public schools to one minute.

The updated version also includes new idling regulations that are, or will soon be, in effect in Florida, Maine, Pennsylvania and South Carolina.

The American Transportation Research Institute, a non-profit research organization, monitors the development of idling regulations across the country on an ongoing basis and maintains the listing as a free service to help trucking companies and truck drivers comply with the increasing number of state and local idling regulations.

More info: www.atri-online.org.