User-centered smart traffic sign development study /
Flaggers protect workers by providing temporary traffic control and maintaining traffic flow through a work zone. They are often the first line of defense to stop distracted, inattentive, or aggressive motorists from intruding into the work area. This project aims to develop an automated intrusion d...
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| Main Author: | |
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| Corporate Authors: | , , |
| Format: | Book |
| Language: | English |
| Published: |
St. Paul, Minn. :
Minnesota Department of Transportation, Office of Research & Innovation,
2023.
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| Series: | Final report (Minnesota. Department of Transportation) ;
2023-26. |
| Subjects: |
MARC
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| 100 | 1 | |a Morris, Nichole L. | |
| 245 | 1 | 0 | |a User-centered smart traffic sign development study / |c prepared by Nichole L. Morris [and others] |
| 246 | 1 | |i Title from technical summary: |a Developing smart signs for traffic control in work zones | |
| 260 | |a St. Paul, Minn. : |b Minnesota Department of Transportation, Office of Research & Innovation, |c 2023. | ||
| 300 | |a 115 pages in various pagings : |b color illustrations, charts ; |c 28 cm. | ||
| 336 | |a text |b txt |2 rdacontent | ||
| 337 | |a unmediated |b n |2 rdamedia | ||
| 338 | |a volume |b nc |2 rdacarrier | ||
| 490 | 1 | |a Final report ; |v 2023-26 | |
| 500 | |a "June 2023." | ||
| 536 | |a Performed by University of Minnesota, Department of Mechanical Engineering, HumanFIRST Laboratory and sponsored by Minnesota Local Road Research Board under contract no. |b 1036342, work order 9 |f CTS #2022003 | ||
| 520 | 3 | |a Flaggers protect workers by providing temporary traffic control and maintaining traffic flow through a work zone. They are often the first line of defense to stop distracted, inattentive, or aggressive motorists from intruding into the work area. This project aims to develop an automated intrusion detection system to alert drivers who are unsafely approaching or entering a flagger-controlled work zone. A human factors user needs assessment found maintenance workers preferred a modified traffic signal to feature the alert system due to flagger risks of being in the roadway and drivers failing to stop and remain stopped when presented with the STOP side of the flagger sign. A modified traffic signal that could be operated using a handheld remote was developed. The low-cost embedded electronics on the traffic signal enabled it to track trajectories of nearby vehicles, detect potential intrusions, and trigger audio-visual warnings to alert the intruding driver. Usability testing in a simulated driving test found poor expectancies and stopping rates of the traffic signal-based alarm system compared to a traditional flagger but did demonstrate evidence that drivers may be less likely to stop and remain stopped with the flagger STOP sign than the red ball indicator of the traffic signal. Furthermore, some drivers corrected their initial stopping error after triggering the auditory alarm of the traffic signal. A follow up test found improved performance with the alert system incorporated into an audiovisual enhanced STOP/SLOW flagger paddle. Testing of the developed sensor system found the system capable of simultaneous multi-vehicle tracking (including estimation of vehicle position, velocity, and heading) with a range of up to 60 meters and angular azimuth range of 120 degrees and correctly detecting all test intruding vehicles. | |
| 504 | |a Includes bibliographical references (pages 71-73) | ||
| 530 | |a Available online. | ||
| 599 | |a MN-2023-26 |9 LOCAL | ||
| 650 | 0 | |a Traffic signs and signals. | |
| 650 | 0 | |a Road work zones |x Safety measures. | |
| 650 | 0 | |a Flaggers (Road construction workers) | |
| 650 | 7 | |a Work zone safety. |2 trt | |
| 650 | 7 | |a Work zone traffic control. |2 trt | |
| 650 | 7 | |a Warning devices. |2 trt | |
| 650 | 7 | |a Warning signs. |2 trt | |
| 650 | 7 | |a Human factors. |2 trt | |
| 650 | 7 | |a Driving behavior. |2 trt | |
| 690 | |a Internet resource. |9 LOCAL | ||
| 710 | 1 | |a Minnesota. |b Department of Transportation. |b Office of Research & Innovation. | |
| 710 | 2 | |a University of Minnesota. |b HumanFIRST Laboratory. | |
| 710 | 2 | |a Minnesota Local Road Research Board. | |
| 830 | 0 | |a Final report (Minnesota. Department of Transportation) ; |v 2023-26. | |
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