Fatigue and the Schedule That Doesn't Fit

Rest: 6 h 45 min between shifts, with only ~5 h sleep, is short for a safety-critical role. Most heavy-vehicle fatigue rules require a minimum continuous rest break between shifts (commonly 7–10 h depending on jurisdiction), and 6 h 45 min is likely below the minimum. Even where it technically meets a minimum, 5 h sleep produces cumulative sleep debt.

Cumulative hours: 62 hours in 7 days is high. Many regimes cap weekly/fortnightly work hours and require minimum continuous rest within a cycle. You need to check the specific limits that apply to your operation, but the pattern is clearly unsustainable.

The roster itself is the defect: a 22:30 finish followed by a 04:00 start gives a 5.5-hour turnaround, which is not enough for sleep and recovery. The planner has built a schedule that cannot be worked safely within fatigue rules. That is a chain-of-responsibility issue - the scheduler and operator share the duty to ensure schedules allow compliance, not just the driver.

Symptoms at 10:30: heavy eyelids and micro-sleep urges after only 3 hours are red flags of serious impairment, not ordinary tiredness. You must not "push through" to the rural depot.

Stop now, at the earliest safe opportunity - do not aim for the 35 km truck park.

Reasoning:

• Distance vs. impairment: 35 km at highway speed is roughly 25–30 minutes of driving while already experiencing micro-sleep signs. A micro-sleep of even 3–4 seconds at 100 km/h covers over 80 m blind. The risk of a crash in the next 35 km is materially higher than the inconvenience of stopping.
• The rest area is behind you: turning around is not necessary; use the first safe place - a wide shoulder with good visibility, a service road, or a property entrance - to get off the carriageway. Safety of the stopping place matters, but a controlled stop in a safe off-road spot beats continuing impaired.
• A 15–20 minute nap (with an alarm) is a recognised short-term countermeasure; it is not a substitute for adequate rest, but it restores alertness enough to move to a proper facility.
• Communicate: notify the planner that you are stopping for fatigue and that the schedule cannot be met. Do not accept pressure to continue.

What not to do: do not rely on caffeine alone, loud music, or open windows. These mask symptoms briefly and fail as impairment deepens. Do not stop in a live traffic lane or on a narrow shoulder with poor sight lines if a safer option exists within a short distance.

Records:

• Record the fatigue event: time symptoms began, action taken, location, duration of rest, and notification to the operator.
• Update your work diary/log accurately - do not adjust times to make the schedule look compliant.
• Note the actual rest period between the previous shift and this one, and the cumulative hours worked.

Notifications: inform the planner/operator immediately that the run is delayed and why; request a revised schedule. If the roster pattern is systemic, raise it as a safety concern so it is corrected, not repeated.

Chain of responsibility:

• The operator/scheduler must not schedule work that requires a driver to exceed fatigue limits or to start without adequate rest. A 04:00 start after a 22:30 finish is a scheduling failure, and the planner shares responsibility for the resulting risk.
• The driver remains responsible for not driving while impaired and for refusing to work an unsafe schedule.
• Consignors/loading parties can also contribute if they impose delivery windows that force unsafe schedules.

Key principle: compliance is not achieved by the driver "managing" an impossible roster. The schedule must be designed so that lawful rest and driving hours are achievable. Documenting the event protects you and forces the operator to fix the underlying pattern.