TransForce Inc., a nationwide truck-driver staffing firm headquartered in Alexandria, Va., acquired the assets of Trucking Unlimited, effective Dec 22.

Trucking Unlimited operates www.truckdrivingjobs.com as its primary job board matching motor carriers with professional truck drivers. It has a national footprint.

The acquired company works with a truck driver database of more than 500,000 drivers nationwide. It also operates www.TruckingCompaniesHiring.com, www.TruckingUnlimited.com, www.TruckingIndustry.news and www.TruckersForum.com.

Terms of the transaction were not disclosed.

Trucking Unlimited LLC, a TransForce Company, will continue to operate from its West Hills, Calif., headquarters. Serge Gorelyshev and Mike Pourshakori, who founded Trucking Unlimited in 2012, will remain with the company.

The transaction follows TransForce’s September acquisition of Driving Ambition, a regional provider of commercial truck drivers in the central US.

“Future acquisitions are part of our growth strategy,” said TransForce President and CEO David Broome. “Along with organic growth, we continue to seek acquisitions with like-minded companies such as Trucking Unlimited, that are market leaders in providing high-quality services to the transportation and logistics industry.”

TransForce ranks No. 22 on Staffing Industry Analysts list of largest industrial staffing firms in the US.