This annual national event is credited with lowering worker fatalities almost 40%. Recent stats suggest that there's still more that can be done to save lives.

15: Years since the first National Work Zone Awareness Week campaign. The idea started with one public works employee in Virginia, and since 1999, the Federal Highway Administration, the American Association of State Highway and Transportation Officials, and the American Traffic Safety Services Association (ATSSA) have collaborated to organize the event. This year’s theme: "Work Zone Speeding: A Costly Mistake."

609: The number of people killed in highway work-zone crashes in 2012 (the most recent year for which figures are available). That's 19 more fatalities than were recorded in 2011.

6: The percentage of 2012 fatalities that were work zone workers, according to a recent highway work zone study conducted by the Associated General Contractors of America.

8: The increase in the number of workers killed in 2012. According to FHWA, there were 130 worker fatalities in 2012, eight more than 122 in 2011.

25: The percentage of jobsites forced to temporarily shut down because of a crash, according to the Associated General Contractors of America's recent highway work zone study. The report found that 38 percent were closed two or more days.

Watch the 2014 public service video here: