Although these terms are written with the transport industry in mind, they are highly relevant and applicable for other industries as well.
Minimum continuous break in a 24 hour period for a solo driver: 7 hours in the Standard Hours option, 7 hour continuous break or 8 hours in 2 parts (islimited) in the Basic Fatigue Management option, 6 hour continuous break or 8 hours in 2 parts (subject to conditions).
Night sleep: At least seven hours continuous rest between 10pm and 8am.
Shift: The period of driving and work time between two periods of continuous sleep opportunity. A shift is deemed to have started at the end of the last continuous sleep opportunity and finishes at the beginning of the next continuous sleep opportunity.
Short rest break: Any rest break that is 15 minutes or more in duration, but less than seven hours. Means time at work provided for rest and meals after a continuous period of active work and does not include non-driving work time or time not working. Short rest is recorded in minimum 15 minute periods (i.e. any non-work less than 15 minutes does not counttowards rest, any period of non-work of 15 minutes but less than 30 minutes is counted as 15 minutes rest etc.).
Night work: Any driving or work undertaken between midnight and 6 am.
Hazard: A source or situation with a potential to cause injury, illness or disease.
Hazard identification: Process of recognising that a hazard exists.
Risk: The likelihood of an injury, illness or disease occurring and the severity of any injury, illness
or disease that results from exposure to a hazard.
Risk assessment: Process of working out how big a risk is present and what risk factors are causing the problem.
Risk control: The process of applying appropriate prevention measures to eliminate or minimise any
risks.
Circadian rhythm: Circadian rhythms or the body clock regulates physiological and behavioural functions on a 24 hour basis. Sleep and wakefulness are programmed and sleepiness is greatest between midnight to 6 a.m. and to a lesser extent between 2-4 p.m.
Fatigue: Fatigue can be described as a progressive loss of alertness that ultimately ends in sleep.
Sleep debt: Failure to have a normal sleep results in sleep debt that accumulates and can only be paid back by undisturbed, restorative sleep.
Schedule: The pattern of driving and work covering one or more trips. For operators with rostered drivers a schedule might operate over a week or a month. For less regular or predictable situations a schedule may refer to a single trip.
Source: NTC’s Guidelines For Managing Heavy Vehicle Driver Fatigue August 2007
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