When backing a tractor-trailer, why is it recommended to back toward the driver's side when possible?

BACKING — DRIVER'S SIDE (SIGHT-SIDE) vs BLIND SIDE: When backing a combination vehicle, back toward the DRIVER'S SIDE (left) whenever possible. WHY: The driver can see down the side of the trailer and watch the rear by looking out the driver's window — much better visibility; BLIND-SIDE backing (toward the right/passenger side) means the trailer rear is on the side away from the driver, creating a large blind area where the driver cannot see obstacles, people, or the trailer's path; GENERAL BACKING SAFETY: Get out and inspect the path before backing (GOAL — Get Out And Look); use a helper/spotter when possible (agree on hand signals); back slowly; use mirrors on both sides; honk before backing; if you must back blind-side, use extra caution, get out and look frequently, and use a spotter; STEERING: To back a trailer, turn the wheel in the OPPOSITE direction of the desired trailer movement initially, then follow the trailer; back in small movements and correct early; sight-side backing is safer and recommended whenever the situation allows a choice; this is tested on the exam and demonstrated in the skills test.