NEW YORK (NBC News Channel) -- A worsening shortage of truck drivers is leaving jobs unfilled, delaying some deliveries, and pushing up freight rates.
According to the Trucking Association, the annual turnover rate at large carriers rose to a four-year high of 90 percent in the first quarter from 75 percent a year ago.
Turnover at small carriers jumped even higher to 71 percent from 50 percent.
