Which of the following is not a factor affecting off-track patterns?

Weather conditions do not directly affect off-track patterns, which refer to the paths that the wheels of a vehicle take, especially during turns. The off-track pattern is influenced mainly by physical characteristics of the vehicle and its loading configuration.

The length of the vehicle plays a significant role because the longer the vehicle, the greater the distance the rear wheels must travel when negotiating a turn compared to the front wheels. Similarly, the pivot points between the truck and trailer determine the angle at which the trailer turns, affecting how much off-track occurs. Additionally, the distance of the 5th wheel from the rear of the truck influences how sharply the trailer can pivot and, consequently, how far off-track it will go.

Weather conditions, while they can impact driving conditions such as traction or visibility, do not inherently change the geometry or physical factors that dictate off-track patterns during a turn. Therefore, they are not considered a direct factor affecting off-track patterns.