National Maximum Speed Law for the 55 mph speed limit offered, "Speed limit 55. It's not just a good idea. It's the law.". Intelligentsia riffed that with a more absolute statement based on the speed of light: "186,000 miles per second. It's not just a good idea, it's the law." National Maximum Speed Law The National Maximum Speed Law (NMSL) in the United States was a provision of the Federal 1974 Emergency Highway Energy Conservation Act that prohibited speed limits higher than . It was drafted in response to oil price spikes and supply disruptions during the 1973 oil crisis. While Federal officials hoped
Light rail in North America system, despite being only about 15.5-miles long, transported an average of approximately 268,500 passengers per day in the Fourth Quarter (Q4) of 2013, translating into over 18,000 daily boardings per mile, which is the highest per mile boarding rate of any North American light rail system. The Xochimilco Light Rail line is close behind, seeing almost 11,400 boardings per mile in Q4 2013, the second highest rate of boardings per mile of any North American system. The United States has a number of light rail systems in its mid-sized to large cities. , there are 26 modern light rail systems,