What was a lasting effect of the 1970's Energy Crisis?

a. price control

b. rationing

c. Daylight Saving Time

d. National speed limits

The correct answer is D.

Due to the limited amount of oil during the 1970's, the US government passed the National Maximum Speed Law in 1974. This resulted in the creation of the 55 mph speed limit. The goal of establishing this speed limit was to reduce fuel consumption. This law would later be modified to let drivers go up to 65 mph.