Can roadside safety messages actually make the roads more dangerous? A new study in @ScienceInsider says they might. 🧵
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1.35 million people are killed in road crashes worldwide each year. To ⬇️ accidents, many policymakers have turned to #BehavioralDesign interventions, expressing hope that “in-your-face” safety messages will “motivate motorists to exercise caution behind the wheel.”