Rick Herrington, NTTA deputy executive director, said the maximum on most sections of the two roads would go to 70 mph. The limit on the Dallas North Tollway from Trinity Mills Road toward downtown would go from 55 mph to 65 mph.
Herrington told The Dallas Morning News that a speed study that is nearing completion shows 85 percent of motorists already drive the higher speeds. And he said it is safer if everyone is going the same speed.
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The NTTA board is expected to consider the higher limits next month. The higher speed limits would go into effect Sept. 1.