Carriers impose surcharges, rate increases.

A t a time when many carriers are reporting record revenues, fuel costs and low capacity are prompting them to impose fuel surcharges and rate hikes on shippers.

LTL carrier Pitt Ohio Express led the pack, with a 5.9-percent rate hike that it announced in May.

Overnite Transportation Co., the nation's sixth largest LTL carrier, will raise rates 5.5 percent this month on all non-contractual shipments in the United States and Canada. That increase will apply to minimum charge, LTL, and truckload rates. Yellow Freight System will increase its rates this month