Skip to main content

Currently Skimming:

9 Technological Countermeasures for and Corporate Management of Fatigue
Pages 153-170

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 153...
... . To address these concerns, both technological approaches and fatigue management protocols have been advanced that are designed to detect and manage fatigue among CMV drivers.
From page 154...
... The final section addresses the importance of a safety culture. TECHNOLOGICAL APPROACHES FOR DETECTING AND MANAGING OPERATOR FATIGUE Fatigue detection and management approaches are of three main types: (1)
From page 155...
... Online real-time operator fatigue detection technologies include a variety of methods for directly measuring factors associated with driver fatigue, such as electroencephalographic (EEG) frequency band activity; heart rate variability; and ocular variables, including saccades, slow eye movements, blink rate, or eyelid closure (see Abe et al., 2011; Chua et al., 2012; Dinges et al., 1998)
From page 156...
... Unlike online fatigue detection approaches, fitness-for-duty tests produce a snapshot in time of a worker's level of alertness prior to a duty period that can predict performance capability later in the day during the duty period. The prediction is based on a comparison of baseline data specific to the individual, consisting of measurements taken when the individual was well rested or without a sleep debt.
From page 157...
... Research protocols conducted in operational settings also have demonstrated its validity for identifying operator fatigue (Gander et al., 2008; Pack et al., 2006; Rosekind et al., 1994) The 10-minute duration of the PVT is often considered impractical in most operational environments because it requires the individual to disengage completely from his or her operational duties (e.g., driving)
From page 158...
... . Government entities are showing increased interest in the use of biomathematical models in the development of regulations and comprehensive fatigue risk management programs.
From page 159...
... . Conclusion 11: Operator fatigue has been singled out for its negative safety implications for all workers, including commercial motor vehicle drivers.
From page 160...
... . One study of Connecticut roads specifically addressed the possibility of fatigued drivers using the rumble strips to alert them repeatedly to their own drowsiness and redirect their attention, thus encouraging them to keep driving until they drifted off the road along a stretch with no rumble strips.
From page 161...
... On many routes, moreover, numerous commercially operated truck refueling rest stops are available to accommodate many of the needs of long-haul truck drivers, including restaurant food, convenience store purchases, lounges, bath and shower rooms, and so on. These rest stops also provide spaces for extended truck parking to permit drivers to sleep in their truck-mounted sleeper berth.
From page 162...
... Conclusion 15: Repeated surveys by trucking industry and other research organizations have revealed insufficient numbers of publically available rest areas where commercial motor vehicle drivers can safely take a lengthy rest. This issue has the potential to impact fatigue-related crash risks and needs to be addressed by the safety community.
From page 163...
... Whether V21 systems that warn of traffic slowness/stoppages reduce fatigue-related crashes is a topic for further research. Vehicle-based Systems In addition to the systems installed on the vehicle to detect drowsiness/fatigue in drivers discussed earlier, vehicle-based systems ­ for reducing fatigue-related crash risk include forward collision warning, automatic emergency braking, lane departure warning systems (LDWS)
From page 164...
... The system is widely available in newer automobile models as part of special option order electronic monitoring packages. It is clear that such LDWS technology could eventually allow truck fleet owners to analyze near-realtime safety information transmitted wirelessly from their vehicles using existing fleet communication systems.
From page 165...
... This is one of the many reasons why fatigue detection and mitigation technologies and autonomous driving systems need to be carefully designed, then thoroughly tested, evaluated, and validated. Moreover, given the various incentives that affect a driver's decision making concerning pulling over to take a rest when tired, there is likely an important benefit to testing such systems in less controlled settings, such as in naturalistic driving studies.
From page 166...
... This system also makes use of the speed and duration of travel. Finally, it is worth mentioning, as is the case for rumble strips, that safety issues can arise if crash avoidance technologies are considered countermeasures for fatigue because they provide protection against crashes, rather than addressing fatigue.
From page 167...
... FATIGUE MANAGEMENT PROGRAMS Fatigue management programs define policies and procedures for managing and mitigating fatigue in safety-sensitive environments (­ erman et al., 2012)
From page 168...
... highlights the importance of treating safety as the responsibility not only of drivers but also of dispatchers and fleet managers, as they are responsible for scheduling loads and are aware of how many hours drivers have been on duty. CTBSSP Synthesis 14 cites 3  DOT Medical Exam and Commercial Motor Vehicle Certification.
From page 169...
... In the end, however, implementation of fatigue management practices depends mainly on personal initiative by the independent driver. The above discussion relates to the concept of safety culture, which is achieved when shared values and beliefs interact with a carrier's structures to produce behavioral norms.


This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More information on Chapter Skim is available.