Class 2, 3, and 4 truck sales have kept overall pace year-over-year, according to data released by the NTEA. However, Class 3 sales expectations haven’t quite kept up during the second quarter, according to the NTEA.

Sales growth in June 2014—the period covered in the NTEA’s latest report—are expected to encourage accelerated growth in Class 3 shipments in the second half of the year. Between July 2013 and June 2014, Class 6 and 7 shipments remained well below sales, but expectations have started to improve in both market segments in the second quarter.

In the Class 2 segment of the NAFTA commercial truck chassis market, sales have been trending up since February, according to the NTEA. June sales reached 3,500 units. In annual percentage terms, this is actually down from June 2013, according to the NTEA data.

NAFTA sales of Class 3-5 commercial truck chassis sustained nearly 20,000 units per month in the second quarter. OEM shipments almost exactly matched sales, according to the NTEA.

The NAFTA Class 6-7 market segment was seemingly out of sync with the rest of the industry in the second quarter, according to the NTEA. While the industry was registering sales increases on average, the Class 6-7 market segment registered sales declines. While OEM expectations will likely be low into the second half of 2014, an improving U.S. economy may provide a boost before the year ends.