Dec. 2 (UPI) -- The U.S. Department of Transportation on Tuesday announced 15 semifinalists for its recently unveiled innovation challenge and million-dollar prize to improve U.S. transportation infrastructure.
The public was asked to identify a "critical transportation infrastructure challenge" through the transportation department's "ideas challenge," which was described as seeking out "bold, transformative solutions" to help America's aging infrastructure, improve traffic safety and cut costs.
"These projects represent the best and brightest, next generation ideas to propel us forward," said U.S. Transportation Secretary Sean Duffy in a statement.
Some received 448 concepts were submitted, according to DOT officials.
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