Multipurpose Off-Highway Utility Vehicles

An ANSI/OPEI B71.9 multipurpose off-highway utility vehicle cruising safely in the dirt.

ANSI/OPEI B71.9-2016 – Multipurpose Off-Highway Utility Vehicles is an American National Standard that establishes the equipment, configuration, and performance of multipurpose off-highway utility vehicles (MOHUVs).

ANSI/OPEI B71.9-2016 defines a MOHUV as having the following characteristics:

“1) intended to transport a person(s) and/or cargo, with a top speed in excess of 25 mph (40.2 km/h);
2) 2030 mm (80 in) or less in overall width;
3) designed to travel on four or more wheels, two or four tracks, or combinations of four or more tracks and wheels;
4) using a steering wheel for steering control;
5) with a non-straddle seat;
6) with a Gross Vehicle Weight Rating of no more than 1814 kg (4000 lb), and
7) with a minimum cargo capacity of 159 kg (350 lb).”

To meet some of these performance features and determine the unique characteristics of a MOHUV model, ANSI/OPEI B71.9-2016 details important testing procedures. The vehicle used in these tests should conform to the manufacturer’s intended specifications, and a test operator, weighing 98 kg (215 lb) ± 1%, should carry out much of the process. If the test operator weighs less than this amount, the standard advises adding additional weight to the operator’s seat. Similarly, if certain test procedures require a weight equivalent instead of an actual test operator, the Test Occupant Equivalent Weight should be 98 kg (215 lb) ± 1%.

An ANSI/OPEI B71.9 multipurpose off-highway utility vehicle crossing a forest creek.

The vehicle should be tested in four configurations: at curb weight, at curb weight plus a test operator, at curb weight plus a test operator and one passenger, and at GVWR (gross vehicle weight rating). The test course, used for determining maximum speed, brake performance, dynamic stability, and handling, should be “a straight, horizontally flat surface sloping less than 1.0 degree (1.7% grade)” and long enough to allow for maximum speed to be achieved.

However, since the testing is intended to evaluate the performance of off-highway utility vehicles, additional testing courses are necessary to carry out all procedures. For sloped surface testing, ANSI/OPEI B71.9-2016 recommends the use of a “slope that is at least 11.3 degrees (20% grade).”

Other than performance, the focus of ANSI/OPEI B71.9-2016 emphasizes safety. This includes not only the proper Type 2, 3-point seat belts that conform to SAE J 2292-2016 (SAE J2292-2016) – Combination Pelvic and Upper Torso Operator and Occupant Restraint Systems for Off-Road Work Machines, but also occupant side retention devices, handholds, and detailed safety and information labeling.

Further guidelines and specifications for MOHUVs are addressed in the document.

ANSI/OPEI B71.9-2016 – Multipurpose Off-Highway Utility Vehicles is available on the ANSI Webstore.

One thought on “Multipurpose Off-Highway Utility Vehicles
  1. I would like to know what the ANSI Standard is for side by side seat bases, example is what construction material, eg. plastic, aluminum, and/or steel, and what tests that they have to pass to be approved as meeting the ANSI Standard?

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