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The Moose Test Doesn’t Hold Its Own Weight

Tuesday, November 1, 2016 By pdcteam Leave a Comment

moose-test-truck

A recent video of a Toyota Truck coming close to flipping as it drove through the “Moose Test”, created a great deal of Social Media talk.  PDC would like to share our thoughts on the video.

Our Thoughts

For those that conduct EVOC programs, the Moose Test is a lane change without the decision component. We have been using the lane change for 40 years designed from the ISO 3888 standard for evasive maneuver tests, which is the same lane change the Toyota drove through.

In 2012 the same magazine did a video of the Jeep Grand Cherokee lifting.

In our opinion, what caused the Jeep and Toyota to lift was a combination of the driver, the load in the vehicle, and tire pressures that could not handle the load. The fact is that if you apply a sufficient amount of energy to the Center of Gravity (CG) of a vehicle, you can get any vehicle to lift and roll. It’s the laws of physics. In our honest opinion, if the magazine makes a profound statement like “take the vehicle off the road,” they should back it up with a computer analysis of what the vehicle is doing. For very little money, the producers of the video can purchase a G-Meter that will tell them everything they need to know about what the vehicle is doing, including how much energy is placed on the CG, for how long, and where in the scenario was the maximum energy applied to the vehicle.

For all those who use SUVs/ Trucks as patrol vehicles, or for that matter, all those who have an SUV/Trucks as a personal vehicle, some critical safety issues should be taken away from the Jeep/Toyota Moose Test.

Just because a vehicle looks like it can carry a lot of cargo and people does not mean that it can. For SUVs/Trucks, the vehicle payload is a crucial safety number; know what it is, and do not exceed it.

I strongly recommend that the tire pressures are checked often. With low or even standard tire pressures, an overloaded vehicle will (not can – will) produce what you see in the video. Please do not take this lightly.

 Some definitions

Payload

The combined maximum allowable weight of cargo, occupants, and optional equipment that the vehicle is designed to carry.

Tire Pressure vs. Payload

SUV’S are much more sensitive to loading and tire pressure. Consult the vehicle manual for correct tire pressure and the payload capacity. You will more than likely find that the tire pressure will vary in accordance with the load being carried.

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Filed Under: Basic Vehicle Dynamics

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