Service industries expanded in January at the slowest pace in nearly two years, raising the risk that persistent weakness in manufacturing is starting to spread to the rest of the U.S. economy.

Service industries in the U.S. expanded in July at the fastest pace since December 2005, showing the economy was building more momentum at the start of the second half of 2014.

The value of an event such as the Mid-America Trucking Show is that it brings together a large piece of the entire trucking industry to one location.

The service industry in the United States grew at a slower pace in September, according to the Institute for Supply Management’s nonmanufacturing index.

As the trucking industry gathers in Phoenix for American Trucking Associations’ annual meeting, the national economic climate is much improved from the gloom that surrounded last October’s meeting in Las Vegas.