ABS not required

They might of ordered it that way.

 

It was a "stock" trailer.

 

My 55 yon mechanical had them one axle and also had abs but it was a 2 axle base trailer

 

I wasn't sure the rules exactly, I do remember when the rule went into effect Talbert started calling their 50 ton a 51 ton to get around the abs. I don't think the do that anymore.

 

Yea, I've got one of those 51 ton Talberts. It's a 2001 model and was ABS exempt at time of manufacture.

We just bought a new Landoll and it's the first trailer I've ever pulled with ABS. My truck is also so old (1995) I had to re-wire the truck to power the center pin on the pigtail to power the ABS. I'm not a big fan of ABS as I go by the "K.I.S.S." philosophy. I've gotten by all these years without incident, I figure it's just something else to tear up.

 

Does anybody know what part of FMCSR covers the exemption for heavy trailers?

I was able to find this CVSA bulletin about it but nothing directly in the FMCSR.

https://www.google.com/url?sa=t&sou...bXx9mJiXV0Lx4OflA&sig2=SIn7iL5ZpwY_kMX5iPdIvQ

 

May have been stock by what the dealer ordered.

 

That's why I put stock I quotes, that seems to be the normal type of trailer you find on lots at dealerships, I figure it must be the "standard" trailer if you just ask for a stock 55 ton. I wish I worked here when it was ordered it would've been a lot different.

 

They still make the 51 ton apparently,

 

Such standards are actually set above the FMCSA's pay grade.

Federal Motor Vehicle Safety Standards (FMVSS) No. 121: Air Brake Systems, located at:
Title 49 - Transportation. Subtitle B - Other Regulations Relating to Transportation (Continued). CHAPTER V - NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION. PART 571 - FEDERAL MOTOR VEHICLE SAFETY STANDARDS. Subpart B - Federal Motor Vehicle Safety Standards.

§ 571.121 Standard No. 121; Air brake systems.

S3. Application. This standard applies to trucks, buses, and trailers equipped with air brake systems. However, it does not apply to:

(a) Any trailer that has a width of more than 102.36 inches with extendable equipment in the fully retracted position and is equipped with two short track axles in a line across the width of the trailer.

(b) Any vehicle equipped with an axle that has a gross axle weight rating (GAWR) of 29,000 pounds or more;

(c) Any truck or bus that has a speed attainable in 2 miles of not more than 33 mph;

(d) Any truck that has a speed attainable in 2 miles of not more than 45 mph, an unloaded vehicle weight that is not less than 95 percent of its gross vehicle weight rating (GVWR), and no capacity to carry occupants other than the driver and operating crew;

(e) Any trailer that has a GVWR of more than 120,000 pounds and whose body conforms to that described in the definition of heavy hauler trailer set forth in S4;

(f) Any trailer that has an unloaded vehicle weight which is not less than 95 percent of its GVWR; and

(g) Any load divider dolly.
​

S4. Definitions.

Heavy hauler trailer means a trailer which has one or more of the following characteristics, but which is not a container chassis trailer:

(1) Its brake lines are designed to adapt to separation or extension of the vehicle frame; or

(2) Its body consists only of a platform whose primary cargo-carrying surface is not more than 40 inches above the ground in an unloaded condition, except that it may include sides that are designed to be easily removable and a permanent “front end structure” as that term is used in § 393.106 of this title.
​

https://www.gpo.gov/fdsys/pkg/CFR-2011-title49-vol6/xml/CFR-2011-title49-vol6-sec571-121.xml
PDF: https://www.gpo.gov/fdsys/pkg/CFR-2011-title49-vol6/pdf/CFR-2011-title49-vol6-sec571-121.pdf​