The <a href="https://en.wikipedia.org/wiki/National_Traffic_and_Motor_Vehicle_Safety_Act" id="mwASI" rel="mw:WikiLink" title="National Traffic and Motor Vehicle Safety Act">National Traffic and Motor Vehicle Safety Act</a> is signed into law by U.S. President <a href="https://en.wikipedia.org/wiki/Lyndon_B._Johnson" id="mwASM" rel="mw:WikiLink" title="Lyndon B. Johnson">Lyndon B. Johnson</a>.