The major cell phone companies Monday are a launching a multimillion dollar summer ad campaign against texting while driving. 

AT&T's Carlos Ramirez says the “It Can Wait” campaign targets teens and young adults.

“The period between Memorial Day and Labor Day is known as the '100 deadliest days' on the road for teen drivers, according to AAA,” Ramirez tells KTRH News.  “In general, texting while driving makes you 23 times more likely to be involved in a crash.”

More than 1.3 million people so far have pledged not to text and drive. 

“There's something about when you sign on the dotted line, its that personal investment that you're going to do that,” says Ramirez.  “Its incredibly powerful and incredibly significant that many people have made the pledge.”

AT&T and other companies have launched free downloadable apps which divert text messages when a vehicle is moving at certain speeds.  Ramirez says the AT&T app has been downloaded more than 100,000 times so far.

Meanwhile, legislation banning the practice in Texas remains stuck in a Senate committee.  Governor Rick Perry however, has promised to veto it if passed.