Search results for work zone
…Work zone crashes within the work zone area – Iowa. Work zone crashes based on type of work zone is shown in Figure 3.13. Results showed that most crashes occurred on lane closure type of work zones when compared to shoulder work zones and lane shift work zones. Other types…
…Use Cases ……………………………………………………………3 LITERATURE REVIEW ………………………………………………………………………………………………….7 Work Zone Data Stakeholders and Use Cases ……………………………………………………………7 Limitations of Existing Data ………………………………………………………………………………….10 Work Zone Elements of Intelligent Transportation System Data Interchange Standards …………………………………………………………………………………………………………….11 Agency Work Zone Data Management Practices ……………………………………………………..21 AGENCY SURVEY AND INTERVIEWS ………………………………………………………………………..22 Work Zone Data Use Cases …………………………………………………………………………………..23 Work Zone…
…main objective of this study is to provide a framework for developing analytical methods for estimating work zone travel time reliability, considering various factors such as traffic volume, work zone configuration, and work zone intensity. The framework covers aspects of work zone selection for the model, evaluating each work zone…
…from previous research. The review covered several subjects relevant to work zone safety including the characteristics of work zone crashes, work zone traffic control methods, CMS applications in work zones, graphic-aided CMS studies in work zone safety, human factors in work zone safety, and the statistical methods used in these…
…the increase in speed variance in the work zone was only 34%. Finally, for work zones with speed limit reductions of 15 mph or more, the increases in the work zone speed variance above the speed variance upstream of work zones ranged from 81% to 93%. Evaluation of Work Zone…
…two-lane work zone required variables ……………………………………………………..38 Figure 7.7. Urban multi-lane highway work zone required variables …………………………………….39 Figure 7.8. Arterial work zone required variables ……………………………………………………………….39 Figure 7.9. Ramp work zone required variables ………………………………………………………………….40 Figure 7.10. Work zones on signalized intersection (4-leg) required variables ……………………….40 Figure 7.11. Work zones on unsignalized intersection…
…Board, Vol. 2258, pp. 40–48. Finley, M. D., J. Jenkins, and D. McAvoy. 2014. Evaluation of Ohio Work Zone Speed Zones Process. FHWA/OH-2014/10. Ohio Department of Transportation, Columbus, OH. https://www.osha.gov/dte/grant_materials/fy08/sh-17795-08/workzone_hazards_awareness_english.pdf https://www.osha.gov/dte/grant_materials/fy08/sh-17795-08/workzone_hazards_awareness_english.pdf http://ops.fhwa.dot.gov/FREIGHT/publications/size_regs_final_rpt/size_regs_final_rpt.pdf http://ops.fhwa.dot.gov/FREIGHT/publications/size_regs_final_rpt/size_regs_final_rpt.pdf http://mutcd.fhwa.dot.gov/pdfs/millennium/06.14.01/6cndi.pdf http://www.ops.fhwa.dot.gov/wz/resources/facts_stats/safety.htm http://www.mmucc.us/mmucc-training/lessons/crashcontext/Work%20Zones_files/Work%20Zones03.htm http://www.mmucc.us/mmucc-training/lessons/crashcontext/Work%20Zones_files/Work%20Zones03.htm 40 Fudala, N. J. and M. D. Fontaine. 2010. Work Zone Variable Speed…
…Work zone objects were placed in each area according to work zone activity level. High activity areas had the following number of objects in each 500-ft segment of the 4000-ft work zone area: • 1 dynamic work zone vehicle or 1 dynamic worker • 4 static work zone vehicles •…
…Zone Data Collection 3.1 Work Zone Data Sources 3.2 Data Elements 3.2.1 Work Zone Location 3.2.2 Work Zone Time 3.2.3 Work Zone Lane Configuration 3.2.4 Work Zone Traffic Control 3.2.5 Other Data Elements 3.3 Work Zone Data Archiving 3.3.1 Database Type 3.3.2 Data Update Frequency 3.3.3 Data Mapping and Visualization…
…knowledge on work zone lane closure capacity. One of the more important additions to recent research was to provide a clearer definition of the capacity of work zone lane closures. The TTI work defined traffic carrying capacity of a work zone lane closure to be traffic flowing through the work…
…in alignment or surface conditions; 5 Scriba, T., “ITS and Work Zones”, ARTBA Work Zone Conference, Workshop C: New Technologies for Smart Work Zones, November 2004, Retrieved on April 11, 2005 from http://wzsafety.tamu.edu/outreach/2004_wz_conference_presentations/its.pdf. 6 Pant. Prahlad D., “Smart Work Zone Systems. Workshops, Work Zones Information. Retrieved on August 22, 2005…
…Group URL uniform resource locator WisDOT Wisconsin DOT WZAD Work Zone Activity Data WZDB work zone database WZED Work Zone Event Data WZDI Work Zone Data Initiative WZDS work zone data system WZDx Work Zone Data Exchange XML extensible markup language ix EXECUTIVE SUMMARY Problem Statement Accurate work zone data…
…more than one hour. Short-term Stationary Work: Daytime work activities which occupy a location from one to twelve hours. Short Duration Work: Work activities that occupy a location up to one hour. Mobile Work: Work activities that move either intermittently or continuously. 2.2. General Work Zone Safety Many studies have…
…B WORK ZONE MAPS 63 B.1 Portage Work Zone Work Zone 64 B.2 Portage Work Zone Location Work Zone 65 B.3 Tomah Work Zone West Work Zone East Work Zone 66 B.4 Tomah Work Zone Location (West Work Zone) Work Zone 67 B.5 Tomah Work Zone Location (East Work Zone)…
…a data-driven tool for assessing traffic impacts of work zones in this project. The research team used data from 766 freeway work zones (253 work zones with durations up to one day and 513 work zones with durations more than one day) and 16 arterial work zones over a period…
…Recommendations for Work Zone Configuration 44 CHAPTER 12: Work Zone Barriers 45 12.1 Summary 45 12.2 Background 45 12.3 Summary of Other Relevant Studies for Work Zone Barriers 45 12.4 Summary of Relevant SHRP2 Work Zone IAP Project Findings for Work Zone Barriers 46 12.5 Recommendations for Work Zone Barriers…
…ODOT. 2000. Traffic Management in Work Zones Interstate and Other Freeways. Policy No.: 516-003(P). Columbus, OH: Ohio Department of Transportation, Traffic Engineering. 32 http://www.dot.state.mn.us/metro/trafficeng/laneclosure/index.html http://www.modot.org/business/workzonesguidelines.htm http://www.modot.org/Safety/WorkZoneSafetyandMobilityPolicy.htm Zwahlen, H.T. and E. Oner. 2006. Improved Work Zone Design Guidelines and Enhanced Model of Travel Delays in Work Zones. Phase I: Portability and…
…work zones can be used for incidents within work zones. However, the MUTCD omits recognition that incident management areas within work zone differ from incident management areas in general. • Work zones already have construction, DOT and perhaps emergency personnel on site. • Work zones already have many suitable traffic…
…Vehicle Traffic Crashes by State and Construction/Maintenance Zone, 2003. http://www.workzonesafety.org/crash_data/workzone_fatalities/2003. Accessed January 2009. Noel, E.C., Z.A. Sabra, and C.L. Dudek. 1989. Work Zone Traffic Management Synthesis: Use of Rumble Strips in Work Zones. Report FHWA-TS-89-037. Washington, DC: Federal Highway Administration. 36 http://www.sha.state.md.us/Safety/oots/trafficsignalsandlaws/WorkZoneSafetyToolbox/02PCMR.pdf http://www.sha.state.md.us/Safety/oots/trafficsignalsandlaws/WorkZoneSafetyToolbox/02PCMR.pdf http://www.workzonesafety.org/crash_data/workzone_fatalities/2003 Opiela, K. 2003. Portable Changeable Message…
…of effort required for performing work zone safety studies, because different data sources need to be cleaned and then fused together. Three types of data are required: work zone characteristics such as length, duration, location, and type; work zone traffic characteristics; and work zone crash characteristics. Thus the work zone…