Hours of Service Regulations in Canada: What the Latest Changes Mean for Freight

Hours of service (HOS) regulations are among the most consequential — and most misunderstood — rules governing commercial trucking in Canada. They determine how long a driver can be on duty, how long they can drive, and how much rest they must take between shifts. They exist for a clear and important reason: driver fatigue is a leading cause of serious trucking accidents, and the regulations are designed to ensure that drivers are rested and alert when they are behind the wheel.

But HOS regulations also have profound implications for freight capacity, transit times, and shipper planning. Understanding how the rules work, how they have evolved, and how they affect the practical realities of freight movement is essential for anyone managing a logistics operation in Canada.

Canadian hours of service regulations are governed by the federal Commercial Vehicle Drivers Hours of Service Regulations, which apply to drivers of commercial vehicles engaged in interprovincial and international operations. Provincial regulations govern intra-provincial operations, and while there is substantial harmonization across provinces, there are some differences that matter for specific operations.

The core framework establishes several key limits:

Driving time is the most fundamental constraint. Under the standard cycle, a driver may not drive more than 13 hours in a day. This is the maximum time the driver can spend operating the vehicle — it does not include time spent loading, unloading, waiting at docks, or performing other on-duty activities.

On-duty time encompasses all time the driver is working, including driving, loading and unloading, pre-trip inspections, and other work activities. The daily on-duty limit is 14 hours. After 14 hours of on-duty time, the driver must take a rest period before returning to duty.

Rest requirements mandate a minimum of 8 consecutive hours off duty between shifts. This is the minimum; many drivers and carriers prefer longer rest periods for safety and wellbeing reasons.

Cycle limits govern the cumulative driving and on-duty time over a 7-day or 14-day period. Under the 7-day cycle, a driver may not drive after accumulating 70 hours of on-duty time in 7 days. Under the 14-day cycle, the limit is 120 hours in 14 days. Once a driver reaches the cycle limit, they must take a 36-hour reset before resuming driving.

Mandatory breaks require drivers to take a break of at least 30 minutes after 8 hours of driving time. This break can be taken as off-duty time or as on-duty, not-driving time (such as time spent at a dock).

One of the most significant recent developments in HOS compliance is the mandatory use of electronic logging devices (ELDs). Transport Canada's ELD mandate, which came into full effect for most commercial carriers, requires that drivers use certified electronic devices to automatically record their hours of service rather than maintaining paper logs.

The ELD mandate has had several important effects on the freight market.

Compliance enforcement has become more rigorous. Paper logs were relatively easy to falsify — a practice that was unfortunately common in parts of the industry. ELDs create an automatic, tamper-resistant record of driver activity that is much harder to manipulate. This has improved safety outcomes but has also reduced the effective capacity of drivers who were previously operating beyond their legal limits.

Capacity reduction was a predictable consequence of stricter HOS enforcement. When drivers who were previously logging more hours than the regulations allow are brought into compliance, the effective capacity of the driver pool decreases. Industry estimates suggest that the ELD mandate reduced effective trucking capacity by several percentage points — a meaningful reduction in a market where capacity and demand are closely balanced.

Detention time visibility has improved as a side effect of ELD adoption. Because ELDs record all on-duty time, including time spent waiting at shipper and receiver docks, the data on detention time has become more transparent. This has strengthened the case for detention pay policies and has given carriers better data to support detention claims.

Cross-border harmonization has improved. The US implemented its ELD mandate before Canada, and the Canadian mandate was designed to be compatible with US requirements. This harmonization reduces the administrative burden for cross-border carriers and drivers.

One of the most significant practical consequences of HOS regulations is the way they interact with detention time — the time drivers spend waiting at shipper and receiver facilities beyond the free time included in the freight rate.

Under HOS regulations, time spent waiting at a dock counts as on-duty time. A driver who spends three hours waiting to be loaded at a shipper's facility has consumed three hours of their daily on-duty allowance without moving any freight. If that driver then drives for 11 hours, they have used their full 14-hour on-duty window — and they may not be able to complete their delivery on schedule.

The detention time problem is pervasive in the Canadian freight market. Industry surveys consistently find that drivers spend an average of several hours per day waiting at shipper and receiver facilities, and that this detention time is a major source of driver dissatisfaction and a significant contributor to the driver shortage.

For shippers, the implications are direct. Facilities that consistently detain drivers for extended periods are less attractive to carriers and drivers, which means they receive worse service — higher rates, less reliable capacity, and lower-quality carriers. Facilities that are known for efficient loading and unloading, accurate appointment scheduling, and prompt release of drivers are preferred by carriers and receive better service.

The economics of detention are also important. Most freight rates include a free time allowance — typically two hours — before detention charges begin. After the free time expires, detention charges accrue at rates that typically range from $50 to $100 per hour or more. These charges are real costs that shippers should be tracking and managing.

HOS regulations have direct implications for how shippers should plan transit times and set customer expectations.

The 11-hour driving day is the practical planning unit for most long-haul freight. While the regulations allow 13 hours of driving, the 14-hour on-duty limit means that a driver who spends any time on non-driving activities — pre-trip inspection, fuelling, dock time — will typically drive less than 13 hours. A planning assumption of 550 to 650 kilometres per driving day is reasonable for most long-haul operations.

Multi-day transit times need to account for the mandatory rest periods between driving days. A shipment that requires two days of driving will also require at least one 8-hour rest period, which means the total transit time is at least 36 hours even if the driving time is only 22 hours.

Appointment scheduling needs to account for HOS constraints. A driver who is scheduled for a 7:00 AM delivery appointment needs to have completed their mandatory rest period before that appointment. If the driver's previous delivery ran late and they did not begin their rest period until midnight, they may not be legally available to drive until 8:00 AM — making the 7:00 AM appointment impossible to meet.

Buffer time in transit planning is not padding — it is a recognition of the operational realities of HOS compliance. Shippers who plan transit times with no buffer for HOS constraints, traffic delays, or dock time will consistently experience service failures.

It is worth stepping back from the operational implications to acknowledge why HOS regulations exist. Driver fatigue is a genuine and serious safety risk. Studies consistently find that fatigued driving impairs reaction time, judgment, and situational awareness in ways that are comparable to alcohol impairment. The consequences of a fatigued driver operating a 40-tonne commercial vehicle at highway speeds are potentially catastrophic.

The HOS regulations are not perfect — no regulatory framework is — but they represent a reasonable attempt to balance the safety imperative of ensuring rested drivers with the operational imperative of moving freight efficiently. Shippers who understand and respect these constraints, rather than pressuring carriers and drivers to cut corners, are contributing to a safer road environment for everyone.

The C.H. Robinson verdict discussed elsewhere on this blog is a reminder that the consequences of safety failures in trucking can be severe — not just for the individuals involved in accidents, but for the companies whose freight practices contributed to those accidents. HOS compliance is not just a regulatory obligation; it is a component of responsible freight management.

The most effective approach to HOS regulations is not to treat them as obstacles to be minimized but as parameters to be incorporated into logistics planning from the outset.

This means building realistic transit time assumptions that account for HOS constraints. It means scheduling appointments that give drivers adequate time to complete their rest requirements. It means managing dock operations efficiently to minimize detention time. It means communicating clearly with carriers about scheduling requirements and being flexible when HOS constraints create timing challenges.

Shippers who take this approach find that their freight moves more reliably, their carrier relationships are stronger, and their overall logistics costs are lower — because they are not paying the premium that carriers charge to compensate for the operational friction created by shippers who do not respect HOS realities.

At Oaken Logistics, we work with our shipper clients to build HOS-aware transit plans and to manage the scheduling and communication that makes those plans work in practice. If you would like to discuss how HOS regulations are affecting your freight program, we would be glad to help.