Heavy Duty Trucking Logo
MenuMENU
SearchSEARCH

Don’t Let Your Fleet's Safety Manuals Hurt You in Court

Did you know your driver manuals and safety policies could be used against you? Find out how plaintiffs’ attorneys use the ‘Rules of the Road.’

Deborah Lockridge
Deborah LockridgeEditor and Associate Publisher
Read Deborah's Posts
February 27, 2024
Don’t Let Your Fleet's Safety Manuals Hurt You in Court

If your driver has violated any of these “rules of the road,” the argument is, your company should be at fault.

HDT Graphic

5 min to read


Attorneys targeting trucking companies in liability lawsuits are increasingly using a tactic that often has nothing to do with the facts of the crash that triggered the litigation.

When asked by a judge to decide what’s reasonable under the circumstances, many jurors will admit that they have made similar mistakes in the past, explains Doug Marcello, a trucking defense attorney with Saxton and Stump and chief legal officer for Bluewire.

“They had to come up with something else,” Marcello explains. “So they said, if somebody runs a stop sign, they violated a rule of the road that's black and white. Why can’t we make more things black and white, set up these rules so we can say there’s a violation there and so they’re negligent.”

unknown node

"Just having something in a manual that you gave to somebody isn't enough.”

The purpose of these “rules of the road,” he says, is to create a black-and-white definition of negligence for the jury. It seeks to create rules against which your driver and your company are measured — to make it automatically negligence if you don’t follow “your rule.”

Attorneys go beyond looking at whether a driver violated vehicle code or federal motor carrier safety regulations or state laws. They look to “industry standards” such as the Smith System. And they go through your company safety manuals, policies and procedures.

If your driver has violated any of these “rules of the road,” the argument is, your company should be at fault.

Attorneys can get access to this information through the discovery process in a legal claim. But beyond that, Marcello says, they will comb through a company’s websites, internet newsletters, and more.

Internal company literature and safety slogans consistently trip up trucking companies. When companies claim “safety is our top priority” publicly, plaintiffs’ attorneys can use it against you.

“Anything they can find that will be something that they can say, ‘Here's a principle that they adopted. And this driver or the company didn't live up to it.”

Read on below for common mistakes fleets make, or watch our interview with Doug Marcello:

6 Common Mistakes Fleets Make in Safety Manuals

1. Using absolutes.

If your safety manual tells drivers to never pull off the side of the road or never make a U-turn, and that circumstance arises in the accident, attorneys will use it — no matter how legitimate a reason the driver may have had to need an exception to that rule.

2. Adding safety platitudes.

Marcello says fleets often see safety manuals as an opportunity to include “platitudes of safety.” Some of these things might be more aspirational and can come back to haunt you later on.

3. Citing other manuals.

Some fleets will include quotes from other safety publications, Marcello says. The problem with that is that during a deposition or trial a plaintiffs’ attorney may ask about that source and allege that the fleet should live up to all the standards in that other document.

4. Setting standards you don’t enforce.

Don’t set standards for your drivers and company that you're not willing or able to enforce, Marcello says. For example, he says, if you have a phone policy for your drivers, you need to enforce it. And don’t limit it to your commercial drivers.

“One of the worst verdicts was a phone-related accident that occurred from a salesperson,” using their phone, Marcello says. “And the plaintiff's argument was, well, you know that they shouldn't be on the phone, because this is what you do with your truck drivers.”

5. Letting revisions get out of control.

It’s not unusual for something to happen that causes a fleet to add or change a safety policy. “What you want to do is to make sure that you don't have conflicts within those policies,” Marcello says. Make sure the effective dates are clear.

“You can imagine in litigation, they’ll say, what was the manual the driver had? We need to know what date or what volume it was that applied.”

What can happen is that the safety manual the driver got is different from the updated policies you’ve added since he was handed that manual during orientation.

6. Not keeping your safety manual updated.

Marcello recommends reviewing your safety manual at least once a year and asking yourself questions such as, “Do I still need that policy? Is it still applicable? Am I still enforcing it?”

Rethink Your Safety Manual

Marcello says fleets should think of their safety manuals and policies as the things they want and need drivers to follow and not add extraneous materials that could backfire in court.

“Look at the policies and procedures you want, the emphasis you have for your drivers, and then reduce it to those things,” Marcello says. Reduce the “target” by stripping down your manual and policies to what is needed, what is effective, and what is enforced.

Do your drivers actually read the safety manual?

Safety manuals, Marcello says, should be something that drivers will actually read and learn from. And thick safety manuals may not be the best way to do that.

What can happen in a deposition goes something like this:

Plaintiff’s attorney to driver: “Is that your signature on this page?”

Driver: “Yep.”

Attorney: “And did you sign for the manual?”

Driver: “Yeah.”

Attorney: “Did you receive a copy of the manual?”

Driver: “Yeah.”

Attorney: “Did you read the manual?”

Driver: “Well, some of it.”

Marcello emphasizes that “just having something in a manual that you gave to somebody isn't enough.”

Checklists or bullet points, or short videos, may be more effective ways of making sure drivers understand your safety policies and procedures.

He says he knows of one trucking company that has simplified its policies down to six principles. “And if you follow those six principles, you have adhered to all that they want you to do.”

Rules of the Road and Reptile Theory

The ‘rules of the road’ approach actually has been around for a while, Marcello says, but it's been eclipsed and to some extent subsumed by the more commonly known “reptile theory.”

The reptile theory is that plaintiffs’ lawyers go after the survival instincts of the jurors, their “reptile brain.”

“And they try to make a case that it’s not just a mere accident, but it's a case of communal safety, and say to the jury, you need to act to save and protect your community in this instance,” Marcello explains. “It doesn't look at the facts of the accident. It's one of a systemic failure, and they try to use that, parlay that into large verdict to do that.

“Everybody talks about the reptile theory,” he says. “Rarely do you hear about these rules of the road. It's a situation where it needs to be recognized and addressed by companies.”

“These are the potential detonator of a nuclear verdict,” Marcello says. “Remember—nuclear verdicts rarely, if ever, come from the facts of the accident.”

Subscribe to Our Newsletter

More Safety & Compliance

Safety & Complianceby News/Media ReleaseFebruary 12, 2026

FMCSA Revokes Another Nine Electronic Logging Devices

Motor carriers using the affected ELDs must switch to paper logs immediately and install compliant devices by April 14 to avoid out-of-service violations.

Read More →
 Illustration showing a driver behind the wheel, DOT offices, and examples of problematic non domiciled CDL
Driversby Deborah LockridgeFebruary 12, 2026

FMCSA Locks in Non-Domiciled CDL Restrictions

After a legal pause last fall, FMCSA has finalized its rule limiting non-domiciled commercial driver's licenses. The agency says the change closes a safety gap, and its revised economic analysis suggests workforce effects will be more gradual than first thought.

Read More →
Samsara Coach driver coaching system.
Safety & Complianceby News/Media ReleaseFebruary 11, 2026

Samsara Taps Nascar Champ Jesse Love as its First Driver Coaching Avatar

A new AI-powered coaching platform from Samsara uses real-time voice agents and digital avatars to strengthen driver safety and scale fleet training.

Read More →
Photo of GO Focus Pro dashcam
Fleet Managementby News/Media ReleaseFebruary 11, 2026

Geotab Launches AI-Powered GO Focus Pro Dash Cam With 360-Degree Visibility

Geotab launches GO Focus Pro, an AI-powered 360-degree dash cam designed to reduce collisions, prevent fraud, and protect fleets from nuclear verdict risk.

Read More →
Commercial vehicle enforcement scenes
Safety & Complianceby News/Media ReleaseFebruary 9, 2026

Operation SafeDrive Nets 704 Drivers, 1,231 Vehicles Out of Service

A high-visibility enforcement effort conducted January 13–15 removed hundreds of unqualified drivers and unsafe commercial vehicles from major freight corridors nationwide.

Read More →
SponsoredFebruary 1, 2026

Stop Watching Footage, Start Driving Results

6 intelligent dashcam tactics to improve safety and boost ROI

Read More →
Series graphic for 2025-2026 trucking trends
Safety & Complianceby Deborah LockridgeJanuary 28, 2026

6 Regulatory Changes for Trucking to Watch in 2026

After a year of what safety and compliance expert Brandon Wiseman calls “regulatory turbulence,” what should trucking companies be keeping an eye on in 2026 when it comes to federal safety regulations?

Read More →
Truck driver behind wheel with superimposed mobile driver assessment from Smith System
Safety & Complianceby News/Media ReleaseJanuary 27, 2026

Smith System Adds Digital Trainer Center Platform

A new Digital Trainer platform digitizes behind-the-wheel assessments, generates Smith5Keys driver scorecards, and connects safety training to ongoing driver risk management.

Read More →
Safety & Complianceby StaffJanuary 26, 2026

Are You Using One of These Revoked ELDs?

Within a two-week period, the Federal Motor Carrier Safety Administration removed eight ELDs from the list of registered electronic logging devices, but has since reinstated two of them.

Read More →
Safety & Complianceby Deborah LockridgeJanuary 22, 2026

What FMCSA’s New Enforcement Push Means for Fleets in 2026 [Video]

Last year was one of regulatory turbulence for trucking companies and truck drivers. Trucking attorney Brandon Wiseman breaks down the top DOT changes and what fleets should be aware of heading into 2026.

Read More →