It can be a good thing because the Necessary and Proper clause of the U.S. Constitution provides the Congress the power to fulfill its legal powers. The Necessary and Proper clause has been used in cases about many things, including challenges about Obama care, legalizing marijuana, and collective bargaining. It places restrictions on rights during times of emergency such as a natural disaster. It safeguards rights by denying the power to make laws that would restrict them too.
Speeding was involved in 35% percent of the fatal crashes that occurred in construction/maintenance zones. Speeding lessens the ability of the driver to safely steer on the highway curves and to prevent crashing on anything in the road.