Get unlimited digital access to $0.99 for 4 weeks.


Highway and Road Transportation
Why the speed limit should stay at 65
Why the speed limit should stay at 65

There are many inaccuracies in letter writer D. Keith Henderson's argument against raising the speed limit to 70 mph in Maryland ("Pick up the pace of Md.'s absurdly low speed limits," Feb. 27). One measures miles per gallon by overall miles driven under city and highway conditions. For example, driving only on the highway may result in drivers getting 32 mph while city driving can drop that to 20 mpg. That's why cars are rated for a combination of highway and city driving. Of course, at any speed if you only drive on the highway your mpg will be higher than a combination of city and highway driving. Moreover, studies have shown that going a steady 50 mph gives...