Explain this old school wisdom I get told by some oldtimers.

I did all 3, tug test, flashlight looking at the hook/ the trailer sitting on the 5th wheel and then a short roll and hand brake. It was that last check for being hooked and I always wanted to feel those trailer brakes. Not sure how someone can even start out on a trip, without knowing what those trailer brakes are doing. It was so easy to adjust the trailer brakes back then.

Another thing I did, was I carried spray polish with me and always cleaned and shined my trailer and tractor tail lights. If I was ever rear ended, I would at least know that I had done my part in being visible.

 

Yeah, it happened.

 

You’re not tripping at all—what you’re describing was (and still is in some circles) a real thing… but it’s also bad practice and risky as hell.

What You’re Talking About
Instead of doing a proper tug test, some drivers:

1. Hook up (maybe quickly)
2. Roll forward 5–8 mph
3. Slam the trailer brakes (“johnny bar”)

The idea is: “If it holds, it’s hooked.”

⚠️ Why That’s a Problem
You already nailed the dangers:

• High hook / partial latch
  • Trailer can still follow you rolling forward
  • Then drop when you hit the johnny bar
• Air lines can rip out
• Landing gear can collapse or get damaged
• Trailer drop = expensive + dangerous

A slow tug test would catch all of that safely.

Why Some Old-School Drivers Did It
There’s a few reasons this became “a thing”:

1. Old Habits from Older Equipment

• Back in the day, some fifth wheels and jaws were less reliable
• Drivers relied more on “feel” than procedure

2. Ego / Experience Mindset

• “I’ve been doing this 20+ years, I know when it’s locked”
• Tug test seen as something “new guys do”

3. Laziness / Rushing

• Tug test takes an extra 10–15 seconds
• Some guys skip steps to save time

4. Misunderstanding What a Tug Test Is For

• That roll + brake slam with your tractor trailer is more like a brake check, not a coupling check

It doesn’t verify the jaws are properly locked.

✅ What a Proper Hook Check Should Be
The safe, standard method:

1. Visual check
   • Kingpin seated
   • Jaws fully closed
2. Tug test (low gear, gentle pull)
   • Trailer brakes set
   • Light pull to confirm lock
3. Then hook air/electrical (or vice versa depending on routine)
4. Final walk-around

Real Talk
What you described is one of those:

• “Old school” habits
• That survived because guys got away with it

But in reality:
It only takes ONE bad hook for that habit to cost:

• A dropped trailer
• Damaged equipment
• Or worse

Bottom Line

• ✔️ Yes—it was (and still is) a thing some drivers do
• ❌ No—it’s not a good or safe practice
• ✅ Your thinking is 100% correct

If anything, the industry has moved more toward consistent safety checks because too many accidents came from shortcuts like that.



Here’s a simple, repeatable, near-foolproof coupling routine that professional drivers use to eliminate dropped trailers and missed hooks. The key is doing it in the same order every time—no shortcuts, no ego steps.

Foolproof Coupling Routine (Step-by-Step)
1. Pre-Check Before Backing Under
Before you even line up:

• Trailer brakes set
• Landing gear down and firm on ground
• Fifth wheel:
  • Clean (no debris/ice)
  • Properly greased
  • Locking jaws open
• Check trailer height:
  • Slightly lower than fifth wheel plate

Most missed hooks start here—wrong height causes high-hitch.

2. Controlled Backing (Slow is Smooth)

• Back straight, slow, and steady
• Aim kingpin directly into fifth wheel throat
• Stop if misaligned—don’t “force it”

Never “slam under it” at speed.

3. The “Lock Confirmation”
Once under the trailer:

• You should feel/hear a solid lock
• Truck will slightly lift trailer as it seats
• Visually confirm:
  • Jaws are closed around kingpin
  • No gap between fifth wheel and apron

If you don’t see it, don’t assume it’s good.

4. ⚠️ Tug Test (Non-Negotiable Step)
This is where most failures are caught.

• Set trailer brakes (or tractor protection depending setup)
• Select low gear
• Gently pull forward at idle

What you’re checking:

• Trailer does NOT move off fifth wheel
• No slipping or pop-out
• Full resistance confirms lock

❌ If anything feels off → STOP immediately

5. Hook Air & Electrical Lines

• Connect:
  • Red (emergency air)
  • Blue (service air)
  • Electrical cord
• Check gladhand seals
• Listen for leaks

Never rely on lines to “confirm hookup”

6. Raise Landing Gear Properly

• Take weight off legs slightly first
• Crank up fully until:
  • Foot is fully clear
• Secure crank handle

Do NOT rush this step—landing gear failure causes serious damage.

7. Final Safety Walk-Around
Before moving:

• Fifth wheel locked (double check visually)
• Lines secure and not dragging
• Landing gear fully up
• Trailer brakes released correctly
• Lights working
• No visible gaps or issues

8. Final “Move-Out Check”

• Ease forward slowly for first 10–20 feet
• Watch mirrors:
  • No shifting
  • No trailer lean
  • No strange movement

Think of this as your final confirmation, not your first test.

Golden Rule of Coupling
“If you didn’t see it lock, feel it lock, and test it lock, it’s not locked.”

⚠️ Common Mistakes That Cause Drops

• Skipping tug test
• High-hitching (wrong trailer height)
• Assuming “it clicked” means secure
• Rushing in tight yards
• Dirty or poorly maintained fifth wheel

Bottom Line
A dropped trailer almost never comes from one big mistake—it comes from skipping one small step.

This routine removes guesswork by forcing:

• Visual confirmation
• Physical confirmation (tug test)
• Operational confirmation (slow pull check)

 

That's how I do it. I do a tug test then get out using a flashlight and do a visual. I always check the ground underneath the drives. Only once I had the springs break on the underside of of the top plate. I didn't hear it latch. I pulled away and had to do a rebuild on it.

 

A sound method, yes...

 

A solid suggestion. Man can learn a lot from the source at the time rather than making public inquiry later.

 

Holy AI summary Batman

 

That's what I use....a sound method. I heard it latch. Let's not overcomplicate things....