Texting, which places protracted demands on eyes, hands and attention spans, is a qualitatively different type of driver distraction. In June 2011, according to NHTSA statistics, more than 196 billion text messages were sent or received in the United States. That was up nearly 50 percent from a year earlier. Texting continues to grow as a medium of communication, with teens — the least capable drivers — the most likely to use it. Last week’s Texas Distracted Driving Summit in San Antonio went beyond such statistics and trends. As Express-News staff writer Michelle Koidin Jaffee reported, a succession of surviving relatives told heartbreaking stories that put faces on the victims of distracted driving. Their message: Texans behind the wheel should put down their phones and drive safely. Many Texas cities, including San Antonio, have ordinances against texting while driving. Last year, the Texas Legislature passed a measure with strong bipartisan support that would have established a statewide ban and sent a strong message on distracted driving. The efficacy of such laws, when enforced, has been demonstrated in NHTSA pilot programs.