Toomey wasn’t sure exactly why the black-and-white lines were specified for the new lanes of I-78, but he speculated that the fresh, white concrete was a contributing factor.

WQAD spoke with the Iowa Department of Transportation about the new black-and-white lines on the I-74 Bridge, and how they will help drivers. Skip Navigation. Share on Facebook; ...

Images: Microsoft's multicolor bar code. Software maker is licensing a new format that uses colorful triangles, rather than black and white lines, to pack more data into less space.