IONIA COUNTY, Mich. — First, we’re not talking about the so-called “zipper merge.” That’s where drivers approach a lane closure using both lanes right up to the lane closure, then take turns merging ...
Imagine cruising down a Beijing expressway at 7 a.m. when, in a matter of minutes, a bright yellow "zipper truck" glides past. Its mechanical arms lift 1-ton concrete segments, shuffles them sideways, ...
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