What does off-tracking mean in combination vehicles?
a.The trailer tires lose traction on wet roads
b.The rear wheels follow a different, shorter path than the front wheels when turning
c.The trailer brakes activate before the tractor brakes
d.The GPS loses the vehicle signal
Explanation
Off-tracking means that when a vehicle goes around a corner, the rear wheels follow a shorter path than the front wheels. The longer the vehicle, the more off-tracking occurs. Drivers must make wider turns to compensate.