The transportation industry plays a crucial role in keeping goods and services flowing efficiently across the province of Ontario, Canada. However, the long hours and demanding schedules for truck drivers and other commercial vehicle operators can pose significant safety risks on the roads. To address this concern, Hours of Service (HOS) regulations have been put in place to govern the maximum driving and working hours for drivers. In this article, we will explore what Hours of Service are, the importance of these rules, and the recent changes, including the new 14-hour rule for truck drivers in Ontario.

Understanding Hours of Service (HOS) Regulations

Hours of Service (HOS) regulations are rules established by government authorities to ensure the safety and well-being of commercial vehicle drivers and the general public. These regulations specify the maximum number of hours a driver can operate a vehicle within a defined period and mandate rest periods to prevent fatigue-related accidents.

The primary purpose of HOS regulations is to reduce the risks associated with driver fatigue, which is a leading cause of road accidents. These rules are applicable to various commercial drivers, including truck drivers, bus drivers, and other operators of vehicles that require a commercial driver’s license (CDL) to operate.

Hours of Service Rules

In Ontario, as in many other jurisdictions, Hours of Service regulations are designed to strike a balance between maintaining operational efficiency and ensuring driver safety.

The key elements of these rules include:

  • Daily Driving Limit: This rule defines the maximum number of hours a driver can operate a vehicle in a 24-hour period. In Ontario, commercial drivers are typically allowed to drive for up to 13 hours within a 24-hour period.
  • Daily On-Duty Limit: Apart from driving, commercial drivers often spend time performing non-driving duties, such as loading and unloading cargo, conducting vehicle inspections, and administrative tasks. The daily on-duty limit sets a maximum number of hours a driver can be on duty, including driving time. In Ontario, the daily on-duty limit is usually set at 14 hours.
  • Rest Breaks: To combat fatigue, HOS regulations mandate specific rest periods for drivers during their duty cycle. In Ontario, a driver is required to take a break of at least 10 consecutive hours after reaching the daily driving and on-duty limit.
  • Weekly Driving Limit: In addition to the daily limits, there are also weekly driving limits. In Ontario, drivers are generally allowed to drive for up to 60 hours in any seven-day period or up to 70 hours in any eight-day period. After reaching these limits, drivers must take a minimum of 24 consecutive hours off duty before resuming their driving duties.

Importance of Hours of Service Regulations

  • Road Safety: The most significant benefit of HOS regulations is improved road safety. Driver fatigue is a major risk factor for accidents, as it impairs a driver’s reaction time, attention, and decision-making abilities. By limiting driving hours and requiring rest breaks, HOS rules help reduce the likelihood of fatigue-related crashes, protecting both drivers and other road users.
  • Preventing Work Overload: Commercial driving can be demanding, with long hours on the road and tight schedules. HOS regulations prevent drivers from being overworked, ensuring they have enough time for rest and relaxation. A well-rested driver is more alert, focused, and less prone to errors, contributing to safer and more efficient transportation operations.
  • Health and Well-being of Drivers: Long hours behind the wheel can take a toll on a driver’s physical and mental health. HOS regulations promote better work-life balance and reduce the risk of stress-related health issues, promoting the overall well-being of commercial vehicle operators.
  • Compliance and Avoiding Penalties: Adhering to HOS regulations is not only essential for safety but also for compliance with the law. Failure to comply with HOS rules can result in penalties, fines, and other legal consequences, potentially damaging a driver’s reputation and the business’s bottom line.

New 14-Hour Rule for Truck Drivers

In 2023, Ontario implemented a significant change to the Hours of Service regulations for truck drivers – the new 14-hour rule. This rule modifies the existing daily on-duty limit and introduces a stricter structure for managing a driver’s workday.

Under the new 14-hour rule, once a truck driver starts their workday, they have a maximum of 14 hours to complete all driving and on-duty activities. This includes time spent performing non-driving tasks, such as loading and unloading cargo, conducting vehicle inspections, and waiting at shipping docks. Once the 14-hour clock starts ticking, it cannot be paused or extended, regardless of breaks taken during the day.

However, it is important to note that within the 14-hour window, drivers are still subject to the 13-hour daily driving limit. This means that once a driver has reached their 13th hour of driving, they must stop driving and begin their mandatory 10-hour off-duty rest period.

The new 14-hour rule aims to enhance safety by encouraging drivers to manage their workday more efficiently, minimizing fatigue-related risks. By limiting the total on-duty time, drivers are encouraged to prioritize rest and avoid situations where they might feel pressured to continue working beyond safe limits.


Hours of Service (HOS) regulations are a critical aspect of ensuring the safety of commercial vehicle operators and the public on Ontario’s roads. These rules govern the maximum driving and on-duty hours for drivers and mandate rest periods to prevent driver fatigue. By adhering to HOS regulations, drivers can enjoy better work-life balance, improved health, and reduced risks of fatigue-related accidents. Additionally, the recent implementation of the new 14-hour rule for truck drivers further emphasizes the province’s commitment to road safety and the well-being of those in the transportation industry.

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