In addition to rear underride guards, truck tractor cabs may be equipped with a Front Underrun Protection System (FUPS) at the front bumper of the truck. The safest tractor-trailers are also equipped with side underride guards, also called Side Underrun Protection System (SUPS). These additional barriers prevent passenger cars from skidding underneath the trailer from the side, such as in an oblique or , or if the trailer across the road. In addition to safety benefits, these underride guards may improve by reducing air under the trailer at highway speeds.
Drivers of heavy trucks and tractor-trailers usually are paid by how many miles they have driven, plus bonuses. The per-mile rate varies from employer to employer and may depend on the type of cargo and the experience of the driver. Some long-distance drivers, especially ownerâoperators, are paid a share of the revenue from shipping.
Hand-eye coordination. Drivers of heavy trucks and tractor-trailers must be able to coordinate their legs, hands, and eyes simultaneously so that they will react appropriately to the situation around them and drive the vehicle safely.
The burglary suspects allegedly busted through a fence with a vehicle and stole a truck and tractor from the site on August 31, 2016, workers said. They also left behind tire tracks.