When planning an over-the-road shipment, one of the first questions is usually simple:

How long will it take to get there?

The answer, however, is rarely as simple as looking at the distance between two points.

Accurately determining transit times is one of the most important, and often misunderstood, aspects of over-the-road transportation. For decades, many dispatchers and logistics professionals have used an average speed of approximately 50 miles per hour when planning shipments. While this figure may appear conservative compared with normal highway speeds, it reflects the operational realities of trucking and the many variables that influence a shipment’s journey.

At Wood-Hall Logistics, we regularly see how those variables affect real-world delivery expectations. Driver hours, traffic, border requirements, appointments and receiver schedules can all change what initially looks like a straightforward transit plan.

Why Transit Time Is More Than Distance ÷ Speed

Commercial vehicles routinely travel at highway speeds above the average used for transit planning. A truck, however, does not spend every hour of its journey travelling uninterrupted at highway speed.

The 50 mph benchmark provides a practical starting point because it accounts for some of these normal operating conditions rather than assuming every mile will be travelled under ideal circumstances.

In our experience, the lane itself matters as much as the mileage. A shipment travelling through major urban areas or crossing the Canada-U.S. border can require a very different plan than one travelling the same distance through a less congested corridor.

Hours of Service Can Change the Delivery Day

One of the most significant factors affecting transit times is compliance with Hours of Service (HOS) regulations.

Drivers are subject to limits on driving and on-duty hours, requiring mandatory breaks and rest periods for safety and regulatory compliance. As a result, a shipment that appears achievable within a single day based on mileage may ultimately require an overnight stop.

This is why Wood-Hall considers more than the total kilometres or miles when planning a shipment. When the driver starts, when the freight is actually ready and how many usable driving hours remain can all affect the realistic delivery window.

Timing and Traffic Matter

The time of departure and day of the week are equally important considerations.

Departures during peak traffic periods can significantly extend transit times, while Friday afternoons, holiday weekends and Monday morning congestion may create additional delays.

For regularly travelled Canadian and U.S. lanes, experience can help identify where those bottlenecks are likely to occur. Sometimes adjusting a pickup window or planning around a major urban centre can make a meaningful difference to the overall schedule.

Delivery Requirements Affect Transit Time Too

Better Information Creates Better Transit Planning

Accurate planning begins with complete information.

Providing the origin, destination, pickup window, required delivery date, appointment requirements, commodity, equipment needs and any cross-border considerations gives the logistics provider a better opportunity to identify potential issues before the freight starts moving.

This becomes particularly important for time-sensitive shipments. The tighter the required delivery window, the earlier those expectations need to be communicated.

Realistic Planning Leads to Reliable Execution

Ultimately, transit-time calculations involve much more than simply dividing distance by speed. They require an understanding of regulatory requirements and real-world operating conditions.

At Wood-Hall Logistics, our experience across Canadian, U.S. and cross-border freight lanes helps us look beyond the mileage, anticipate potential challenges and establish realistic expectations from the outset.

The objective is simple: create a transportation plan that balances efficiency, safety and reliability, then communicate clearly throughout the shipment.
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