With the April 15 deadline fast approaching, many Californians have their tax refunds in mind. Unfortunately, what most residents don't realize is how much of their tax dollars are going to the garbage-that is, to clean up the state's highways. In fact, the current projected annual cost to the California Department of Transportation for litter prevention, cleanup and disposal is $41 million.

To address this situation, Caltrans launched the "Don't Trash California" program. This campaign is a pollution prevention effort aimed at raising the level of awareness among residents of the effects of littering.

The "Don't Trash California" program offers some tips for preventing pollution-and keeping tax dollars from the trash.

+Always keep a litterbag in the car. Many items found on roadways can be easily disposed into a litterbag. This type of waste includes food cartons, napkins, snack food wrappers, soft drink cups and straws.

+Securely cover open loads on all trucks. Much of the debris on the highway comes from truckers who don't cover their loads. Be a responsible driver: place a tarp over a load and tie it down.

+Always use an ashtray to completely extinguish cigarettes and empty the ashtray into the trash. Cigarette butts are the No. 1 littered item on local highways.

+Set a good example for family and friends. Children frequently copy what they see. Encourage good behavior by disposing of trash appropriately and not littering.

+Get involved. Volunteer to help support local cleanup events and/or help educate business leaders and neighborhood associations about the importance of keeping the highways clean.

For more tips or information on the "Don't Trash California" initiative, please go online to www.DontTrashCalifornia.info.