Their hard hats also have reflectors on them. And to help nighttime motorists navigate better through the work zone, Tully crews painted a yellow stripe along the bottom of the mobile barriers. When it's time to dismantle the nighttime work zone each morning, Tully crew members move the barriers and open the lanes for traffic and for daytime work, which usually involves single-lane closures and barriers to protect shoulder workers. During the day, flaggers with slow and stop paddles are an important part of day construction. We don't need them so much at night because we have the road closed, but during the day, when we have our single-lane closures, the flaggers come in handy.
Signs are also a crucial part of both night and day work.
According to White, six variable message signs and hundreds of orange and black construction signs will be used throughout the course of the project. Signs have been used particularly in areas where it's necessary to close expressway entrance ramps. In these locations, Type-3 barricades with reflective signs have been used to alert motorists. Mt. Hope Rock Products, Wharton, N.J., has manufactured the mix. After the mix has been compacted, Tully is responsible for taking core samples for density readings within a 24-hour period.