NHDOT requires that the sand barrel system meet NCHRP 350, Test Level 3 (62.1 mph/100km/h). The contractor is required to submit technical data prior to installation. The details address overall … [Read more...] about Sand barrels in work zones
New Hampshire
Removing temporary traffic control devices with the flow of traffic vs. backing the work vehicle behind to remove the devices
The common practice with New Hampshire contractors is to back up in the work zone and remove temporary traffic control devices. … [Read more...] about Removing temporary traffic control devices with the flow of traffic vs. backing the work vehicle behind to remove the devices
Vehicle warning lights
The department requires warning lights for private contractor vehicles in work zones. Lights are addressed in Item 619.3.1.6: "For the protection of traffic, all equipped vehicles used on the project … [Read more...] about Vehicle warning lights
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 … [Read more...] about Flagger training and certification requirements
Permit requirements to install/erect temporary traffic control warning signs and other temporary traffic control devices along roadways
New Hampshire requires temporary drive permits for logging operations entering the highway where sight distance and other issues are addressed. Signage typically follows MUTCD requirements with some … [Read more...] about Permit requirements to install/erect temporary traffic control warning signs and other temporary traffic control devices along roadways
Salvaged and/or re-galvanized guardrail on construction projects
New Hampshire allows the use of salvaged and/or re-galvanized guardrail in lieu of new guardrail. Under what circumstances will the state agency authorize its use? - Temporary guardrail. How does … [Read more...] about Salvaged and/or re-galvanized guardrail on construction projects