ARLINGTON, Texas — Diesel idling — truck drivers' idling their engines to keep cab air conditioners running while they are resting or waiting to load or unload cargo — is often a simple fact of trucking in Texas, with its frequently unfriendly temperatures.

But while some cities, such as Arlington, Dallas and Little Elm, have placed restrictions on diesel idling, there is no universal mandate on the issue. In general, states and local agencies view long lines of idling trucks as a significant source of nitrogen oxide emissions, a precursor of low-level ozone and of particular concern if the idling is near homes.

Now a new regional diesel-idling program intends to reduce emissions by reducing the idling — and there's federal money to be had for those with the best ideas.

Read the full story at star-telegram.com.