Recently, Oregon State Police stepped up patrols along Central Oregon highways in an effort to catch speeding truck drivers. This effort kicked off after a series of crashes involving semi-trucks. Armed with radar guns, the state troopers took to Highway 97 and Highway 90 around Bend to keep truck drivers and motorists in check.
Whenever there is a truck accident, the first factor to consider is whether the truck was speeding. That would be an example of a negligent driver and would firmly establish liability. An experienced Portland truck accident lawyer will be able to use that information to help build a strong claim to recover any losses due to the collision.
It will also help you understand how fast commercial trucks can travel on Oregon highways.
The following post provides an overview of speed limits and their impact on drivers.
Oregon Speed Limits for Commercial Motor Vehicles
In Oregon, the baseline speed limit for commercial motor vehicles (CMVs) is 55 mph on most rural highways and interstates. However, there are exceptions depending on which roadway the truck is traveling on.
Here are the specific CMV speed limits to consider:
- 55 mph: Standard speed for trucks on most interstate and rural highways.
- 60-65 mph: Designated speeds on specific segments of rural interstate/highways for trucks.
- 55 mph (or less): Rural highways (non-interstate).
- Urban Interstates: Typically, 55 mph.
There are additional considerations, such as differential limits where passenger vehicles are allowed to travel at 70 mph; the commercial truck limit needs to be at least 5 mph lower than the 70 mph limit. Commercial truck speed limits around business districts and school zones are 20 mph, while the limit is 25 mph in residential districts.
How Speed Impacts Truck Braking Distance and Safety
A vehicle’s braking distance is the amount of road needed to come to a complete stop after the driver recognizes the need to stop. Speed impacts a truck’s braking distance with a very simple formula: When you double a truck’s speed, it quadruples its braking distance.
For example, if a fully loaded semi-truck weighing 80,000 pounds is driving at 65 mph, it would need 525 feet to come to a complete stop. That is almost the length of two football fields. Imagine the damage that can occur within those 525 feet.
It is also important to note that the air brake systems on most trucks have a brake lag or delay that kicks in once activated. That delay can increase the braking distance by as much as 36% to 60%.
Speeding is even more dangerous for trucks taking sharp turns off a highway or traveling on wet roads. Those high speeds increase the risk of brake failure or locking.
Federal vs. State Trucking Speed Regulations
A large number of trucks traveling in and out of Portland originated from out of state. That is why the federal government is involved in trucking regulations.
The Federal Motor Carrier Safety Administration (FMCSA) establishes regulations for driver hours, cargo loading, and hazardous material transportation, to name a few. The National Highway Traffic Safety Administration (NHTSA) regulates truck and related equipment safety. Those two agencies aren’t involved in speed regulations.
In 2025, both federal agencies withdrew a proposal to mandate speed limits. That leaves it up to the states. On most highways, Oregon has stricter speed limits below the voluntary governance limit of 60 to 68 mph.
The Role of Speeding in Oregon Truck Accidents
According to the most recent data from the Oregon Department of Transportation (ODOT), there were 1,696 truck-related crashes in a single year. Those crashes resulted in 488 persons injured and 73 who lost their lives.
The top three reasons for an at-fault truck driver were speeding, failure to remain in the lane, and following too closely.
When the trucking company puts pressure on drivers to drive faster or even incentivizes faster deliveries, the risk of accidents increases across the board.
Liability When a Speeding Truck Causes Injuries
It is the truck driver’s choice to speed. They should be well aware of the applicable speed limits, no matter which Oregon road they are driving on. Even though the truck driver can be held responsible for any accident caused by speeding, there are many scenarios where the liability would extend beyond the driver.
Here are the potential liable parties outside of the driver:
- Trucking Company: As mentioned, a trucking company can be found liable if it exerts pressure on the driver to exceed speed limits. It can also be held liable if it engages in negligent hiring practices that result in an unqualified driver being behind the wheel. They can also be liable if they don’t provide adequate training for drivers to recognize the various state speed limits.
- Cargo Loaders: When cargo is not properly secured, and the driver exceeds the speed limit, it can be a recipe for disaster.
Contact a Portland Truck Accident Attorney Today
There are many ways to determine if a truck was speeding just before an accident.
The clearest evidence can be found in the truck’s electronic control module (ECM) or black box. That will provide data on the exact speed at the point of impact in a collision.
There might also be available surveillance footage from traffic cameras or passing cars with dashcams. Additionally, there will be a police report that can include witnesses’ statements and any citations. The challenge would be in gathering all of that evidence.
That is where the Dozier Law Group can prove to be a valuable asset.
We’re a team of experienced Portland truck accident attorneys who have assisted many unfortunate victims of collisions with commercial vehicles. We know how complex these particular claims can be, and that is why we devote the full resources of our office to investigating and identifying all the liable parties.
We also work closely with our clients to calculate all the damages related to the accident.
In many cases, you might not realize that you’re entitled to compensation for the extent of your pain and suffering. Our goal remains steadfast: We want to hold every at-fault party accountable and ensure our clients receive the maximum compensation they are due.
If you’ve been involved in a truck accident, we want to hear from you. Call to set up a free consultation today. Let’s find out together what should happen next.