Flagger training and certification requirements

From New Hampshire Department of Transportation Standard Specifications for Road and Bridge Construction:
“3.3 Flaggers. All flagging personnel shall be trained by a designated trainer at least once every four years. The course shall cover the topics outlined under 3.2.1. Each flagger shall receive from the designated trainer, a card or certificate that provides the date of training and the designated trainer’s name. Upon request by the Engineer, the Contractor and its Subcontractors shall provide verification of training within 48 hours. Any flagger who is trained by a designated trainer and changes employer, must be retrained by the new employer. Flaggers may elect to take a designated trainer course to meet the training requirements in this section, which would not expire with a change of employers.”