Daily Talker: Study Says Summer Means More Road RageSummer officially starts on Saturday -- which means warmer weather, vacations, and according to one study, more road rage. Safeco Insurance found that about 3 in 10 drivers say they are more likely to tailgate, use the horn, yell, or gesture at other drivers in the summer. Those figures go up to around 40 percent on Friday afternoons and during holiday travel weekends like Memorial Day, Fourth of July, and Labor Day.