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Traffic Safety Evaluation of Nighttime and Daytime Work Zones (2008) / Chapter Skim
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Pages 8-13

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From page 8...
... It should be noted that statewide statistics on the amount of day and night work operations each year in New York were not available to allow development of any type of crash rate measure. Data Reduction and Analysis Researchers obtained 6 years of NYSDOT work zone incidents (traffic crashes and construction accidents)
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From page 9...
... The greater relative frequency of temporary lane closures at night is also a likely explanation of the higher percentage of nighttime crashes during traffic control setup and takedown 9 Daytime Work Periods, Daytime Accidents Nighttime Work Periods, Daytime Accidents Nighttime Work Periods, Nighttime Accidents Daytime Work Periods, Nighttime Accidents Total Traffic Crashes 1762 9 316 102 2189 Construction Accidents 931 114 1045 Total 2693 9 430 102 3234 Table 1. Summary of NYSDOT work zone traffic crashes and construction accidents on freeways and expressways (2000-2005)
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From page 10...
... If the crash did involve a vehicle striking a worker, the result was usually quite severe. Overall, 93 percent of those workers who were struck by a vehicle during the 10 All Work Zone Traffic Control Types Lane Closure Traffic Control Work Zones Only Injury Severity Daytime Work Operations, Daytime Crashes Nighttime Work Operations, Nighttime Crashes Daytime Work Operations, Daytime Crashes Nighttime Work Operations, Nighttime Crashes All Traffic Crashes: Fatal Injury PDO (n = 1762)
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From page 11...
... . As stated previously, it 11 All Work Zone Traffic Control Types Lane Closure Traffic Control Work Zones Only Key Crash Types Daytime Work Operations, Daytime Crashes (n = 1762)
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From page 12...
... However, whereas the difference in percentages between nighttime and daytime is statistically significant for all work zone types combined, it is not when only lane closure intrusion crashes are considered. Work Zone Construction Accident Analysis Types of Construction Worker Accidents Table 7 presents the relative frequency of different types of construction worker accidents reported at NYSDOT work zones on freeway and expressway facilities during daytime and nighttime work activities.
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From page 13...
... These findings pertain to both traffic crashes and construction accidents. • About half of daytime work zone traffic crashes and 60 percent of nighttime work zone crashes on NYSDOT freeways and expressways occur during traffic lane closures.
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Key Terms

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  • lane closures
  • temporary lane
  • nighttime operations
  • work zones

  • daytime work
  • work activity
  • active work
  • minor traffic
  • closure operations

  • nighttime work
  • involving construction
  • lane closure
  • crash risk
  • zone crash

  • dot work
  • zone construction
  • zone situations
  • crashes occurred
  • relative frequency

  • work operations
  • nysdot work
  • accident analysis
  • accidents involving


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