Close The dangers of driving while stoned More people are driving under the influence of marijuana. A 2015 study by the National Highway Traffic Safety Administration found 13 percent of nighttime, weekend drivers have marijuana in their system. KHOU 11:08 PM. CDT July 03, 2017 TRENDING VIDEOS Carfentanil hitting the streets of Austin Woman hospitalized after one drink at Cancun resort Mexico resort drowning death a mystery for Wisconsin family KVUE Defenders: Austinites see spike in water bills Musk hints about hyperloop Lone survivor of mom's attack: I saw my mom kill my family San Antonio pastor's plea for daughter and wife answered Round Rock concerned about 'bathroom bill' I-35 to be closed overnight at Oltorf Travis County challenges ICE statement on gang member's release More Stories Alternative suspect in Greg Kelley case accused of… Jul 21, 2017, 5:00 p.m. Supporters of Rodney Reed call to overturn conviction Jul 21, 2017, 10:36 p.m. Senators passes newest version of so-called 'school… Jul 21, 2017, 10:25 p.m.