Category: Vehicle

Vehicle Static Stability Factor

Science of Security Driving

To ensure the safety and security of the principal, security drivers and secure transportation providers should understand that all vehicles have inherent characteristics that decrease the performance of the vehicle, and create a dangerous scenario for the principal. One of those characteristics is the vehicle’s static stability factor (SSF).

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When Stuff Happens Part One


For decades our mantra has been, “When Stuff Happens, You Can’t Be Average.” This is the first in a series of articles that will cover that moment in time “When Stuff Happens.”

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The Computer Chip in Your Butt

Computer chip in your butt

When a vehicle is approaching its limit of adhesion, a driver has two conflicting signals. The first signal is the steering wheel getting light, which means that it requires less effort to increase steering input (turn the steering wheel). The reason for this is that the adhesion the tire makes with the road is getting increasingly smaller – quickly.

The second signal is the vehicle load the driver feels at the back of the seat (their butt), which at the limit of adhesion is high.

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The Inaccuracies of Speedometers

Inaccuracies of Speedometers

Many times a driver is given 30 minutes to get to a destination that requires 45 minutes. So, at times, there is a tendency to drive a little faster than the speed limit allows. One of the questions we get asked is – “how accurate are speedometers”?

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Weight Transfer

center of gravity

Driving is inputs and outputs. A driver applies input to the vehicle via steering – braking – and acceleration and combinations thereof. The output is…

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Airless Tires

Goodyear has developed self-inflating tire technology intended to keep commercial truck tires at the proper pressure, with the end result saving fuel and reducing tread…

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man driving a car with his hands on the steering wheel

Over 90 percent of the information we need to control the vehicle comes from what we see. Vision is the foundation of safe and secure…

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Vehicle Definitions

Payload – The combined, maximum allowable weight of cargo, occupants and optional equipment that the vehicle is designed to carry. (Gross Vehicle Weight Rating minus…

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Security Driver Triangle

Driving, any form of driving, is a balance, and that balance is called the “driving system.” The driving system is made up of three components: THE DRIVER, THE MACHINE, and THE ENVIRONMENT. In our world it is called the Security Drivers Triangle.

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Security Driving and Electronic Stability Control

Electronic Stability Control (ESC) is a computer that takes over control of the vehicle when the vehicle’s path is not what the driver intended it to be. For those of us who have lost control of a car, we know that it’s that first twitch of the car that tells us that we are about to have an exciting experience. That twitch is information the car is sending to us. For some, interpreting this information is second nature, and for others it’s like trying to understand Swahili.

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