(TNS) -- Columbus took its biggest step onto the national stage a year ago when it was dubbed America's Smart City.

The distinction came with a big prize. The city received a $40 million grant from the U.S. Department of Transportation and another $10 million from Vulcan Inc. to turn Columbus into the test track for intelligent transportation systems.

It also came with a ticking clock: four years to follow through on a wide-ranging proposal and produce data showing what pieces succeeded or failed.

Read the full story at govtech.com.