The federal government’s plan to send nearly 22,000 new military jobs to Fort Belvoir could take another public flogging at a congressional hearing today, where elected officials will have a forum to air a long list of anticipated traffic problems.

A town’s worth of army personnel and civilian contractors are set to drop on the southern Fairfax County base by 2011 under the 2005 federal base closure and realignment directives. Many worry that the region’s already overwhelmed transportation systems will be devastated by the move.