01571546

Component

https://doi.org/10.3141/2472-18

A driving simulator was used to investigate the effects of obstructive sleep apnea hyperventilation syndrome (OSAHS) on a sample of 12 hired drivers (including bus and taxi drivers). The test scene was a two-way, four-lane ring road with a design speed of 80 km/h in a freeflow traffic state. OSAHS drivers drove for 10 min before the formal experiment so as to become familiar with the vehicles and road environment. Then each driver had three 30-min driving sessions: a 30-min stimulus session, 30 min of driving before a rest, and 30 min of driving after a rest. The OSAHS drivers were asked not to stop driving except for major personal reasons. At the end of each driving session, subjects were asked the cause of driving errors and when they did not feel well. OSAHS drivers’ driving characteristics (behavior) were studied, such as their ability to control speed, trajectory control, and accident frequency in the conditions of the three 30-min driving sessions. The results showed that 85% of the OSAHS drivers took measures to slow down immediately after being informed of driving over the speed limit. Drivers were driving with excess speed for 25% of the total driving time without being notified by a stimulus; they could feel vibration; and they could adjust the wheel to let the vehicle back into the normal lane. Significantly fewer accidents happened after the rest than happened before the rest. The following countermeasures for these characteristics are suggested to improve OSAHS drivers’ safety and consequently reduce road accidents: temporary lounges at service zones, vibration belts along the roadside, and speed alarms.

01567119

English

pp 155-161

2015

Transportation Research Record: Journal of the Transportation Research Board

9780309295710

Print

Figures; Photos; References

Behavior; Countermeasures; Drivers; Driving simulators; Errors; Highway safety; Low volume roads; Sleep disorders; Speeding

Highways; Safety and Human Factors; I83: Accidents and the Human Factor

TRIS, TRB, ATRI

Jun 24 2015 9:24AM

• Automated Extraction of Horizontal Curve Information for Low-Volume Roads
• Best Management Practices for Low-Volume Forest Roads in the Piedmont Region: Summary and Implications of Research
• Can Traffic Signs Be Too Bright on Low-Volume Roads?
• Cost-Effective Safety Treatment of Trees on Low-Volume Rural Roads
• Decision Tree–Based Method for Safety Treatment Selection at Intersections Involving Shared-Use Low-Volume Roads
• Driver Speed Behavior on Circular Curves of Undivided Two-Lane Rural Roads: Serbian and Italian Case Studies
• Dust Control Products at Hagerman National Wildlife Refuge, Texas: Environmental Safety and Performance
• Effect of Painted Shoulders on Vehicle Speed
• Environmentally Optimized Design for Low-Volume District Roads in Tanzania
• Establishing Speed Limits on Unpaved Roads: Methodology and Case Study
• Identifying Low-Volume Road Segments with High Frequencies of Severe Crashes
• Implementation of Wyoming Rural Road Safety Program
• Inexpensive Retroreflectivity Field Inspection Kit
• Low-Cost Measures for Reducing Speeds at Curves on Two-Lane Rural Highways
• Modeling Driver Behavior by Using the Speed Environment for Two-Lane Rural Roads
• Optimization of Farm-to-Market Road Investment and Maintenance Activities in Selected Developing Countries
• Overview of Amazon Basin Forest Roads Manual
• Physics Models for Vehicle Crush During Frontal Fixed-Barrier Impacts
• Safety Evaluations for Skewed Intersections on Low-Volume Roads
• Safety Inspection and Management Tools for Low-Volume Road Network
• Simple Empirical Guide to Pavement Design of Low-Volume Roads in Indiana
• Strategic Safety Management Plan for Wind River Indian Reservation
• Toward Sustainable Management of Low-Volume Roads in Chile: Improvements and Challenges
• Updating Side Friction Factors for Design of Unpaved Roads
• Worst-Case Connection Strength Considerations in Designing Certification Crash Test Experiments for W-Beam Guardrail