Safety in construction work zones is of great concern since it is one of the most hazardous occupations in the USA.
Workers are subjected to possible accidents from:
According to the Bureau of Labor Statistics (BLS), traffic zone workers are roughly as likely to be struck by construction- or maintenance-related equipment (dump trucks, bulldozers, graders, etc.) as by cars, vans, tractor-trailers, buses, and motorcycles. The BLS says between 2003 and 2010, U.S. workers were fatally struck 152 times by construction- or maintenance-related equipment and 153 times by the other vehicles.
Most of the fatalities are due to:
ANSI/ISEA 107-2004 specifies four performance classes of apparel or headwear that have different amounts of reflective and background material to enhance pedestrian worker visibility under a variety of work and traffic conditions.
Employers should perform a hazard analysis to decide which performance class is needed based on the work conditions anticipated (e.g., closeness of the work area to traffic, time of day/night, weather, complexity of the background environment, pedestrian worker's task load (need to divert attention to complete other tasks), and traffic speed). This analysis is part of the PPE assessment required by 29 CFR 1910.132(d).
Make sure you follow these key engineering controls and work practices:
A worker was cutting concrete along the white center line on a four-lane highway. Orange reflective barrels closed the left lane to traffic, which was routed to a single lane from approximately 8 miles. To accommodate the worker, three to four barrels had been moved into the active traffic lane, and a flagger was slowing down traffic and directing it slightly onto the berm area. An approaching semi-tractor and trailer rig were exceeding the speed limit when the driver hit the guardrail and lost control of his vehicle. The tractor and trailer bounced back through the barrels and struck the worker from behind, killing him.
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