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.”

"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

Winter pileup accidents.
Disaster Responseby Jack RobertsApril 30, 2026

Avoiding Winter Pileups: Don’t Become the Next Link in the Crash-Chain

Winter roadway “pileups” aren’t one crash — they’re a chain reaction. Here’s what triggers them, how truck drivers can spot the danger early, and what to do if you're suddenly trapped in the mess.

Read More →
Mobile tablet showing Motus screen against highway background with Motus logo

FMCSA’s Motus System Is Coming. What Fleets Need to Know Now

The long-awaited registration system promises a single portal — and tighter fraud controls.

Read More →
Graphic with light bulbs, HDT Truck Fleet Innovators logo, and the word Nominations
Fleet ManagementApril 24, 2026

Nominations Open for HDT Truck Fleet Innovators 2026

Heavy Duty Trucking is searching for forward-looking leaders at trucking fleets as nominations for HDT’s Truck Fleet Innovators 2026. Deadline is May 15.

Read More →
Detroit ABA6 safety system.

Freightliner Expands Detroit Assurance with New Intersection and Turning Safety Tech

Detroit’s next-generation ABA6 safety system adds cross-traffic detection and enhanced side guard assist with left-turn protection, targeting high-risk urban scenarios.

Read More →
Illustration with ATRI logo and square blocks spelling out "research"
Fleet Managementby Deborah LockridgeApril 20, 2026

'Beyond Compliance,' Regulations, Driver Coaching on ATRI’s 2026 Research List

The American Transportation Research Institute will examine driver coaching, regulatory impacts — including the "Beyond Compliance" concept —and weather disruptions that shape trucking operations.

Read More →
Illustration of colorful map of United States with DataQs website screen superimposed

FMCSA Revamps DataQs to Improve Fairness, Speed of Reviews

New requirements add firm deadlines and independent review steps, addressing long-standing complaints about inconsistent rulings and slow response times.

Read More →
Illustration of driver medical exam paperwork over duotone background of a blood pressure check

FMCSA Extends Paper Medical Card Exemption … Again

Five states still aren't ready to accept commercial driver medical exam information directly from the medical examiner's registry.

Read More →
Collage of Top 20 Product award ceremonies
EquipmentMarch 31, 2026

HDT Honors the Best New Products of 2025 at TMC [Photos]

Heavy Duty Trucking's Top 20 Products awards recognize the best new products and technologies. Check out the award presentations at the 2026 Technology & Maintenance Council annual meeting.

Read More →
freightliner whitepaper
SponsoredMarch 31, 2026

Detroit Engines: Trusted Performance, Built for What's Next

The Detroit® Gen 6 engine platform proves that real progress doesn’t require a complete redesign. Built on 20 years of trusted technology, these engines are designed for efficiency, stronger performance, and greater reliability than before. And they do it all while complying with 2027 EPA standards on every mile.

Read More →
Aperia HALO front steer axle.
Safety & Complianceby Jack RobertsMarch 18, 2026

Aperia Expands Halo Platform with Steer-Tire Inflation System, Fifth-Wheel Integration

Aperia Technologies introduced a new automatic tire inflation system for steer axles and a partnership with Fontaine Fifth Wheel to integrate coupling status into its Halo Connect platform.

Read More →