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Roads - Iowa
Controlling oversize hauling.
Interstate highways have 67.9% safer accident rate than primary roads.
Iowa superhighway link to East coast complete in 1966, board tells 5 year p
Outside consulting engineers to be permitted.
Highway Commission program to 1986.
Nationwide truck size rules.
Improving low-traffic highways.
Larger trucks likely in Iowa.
Information on weather and road conditions available through Iowa Police Ra
Massive network of freeways planned for completion by 1986, map.
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