Which of the following is part of the AAMVA CDL Manual's definition of attending a placarded vehicle?

49 CFR 397.5(d)(1) (definition of 'attended'); 49 CFR 397.5(d)(2)(iv) (qualified representative must be authorized and able to move the vehicle); AAMVA CDL Manual Sec. 9.6.3 (nhcdm.pdf p.9-13)

Confusing attending with simply being nearby, or mixing it up with the unrelated 300-foot parking rule, leads drivers to believe they're compliant when they're not. Knowing the exact elements, awake, within 100 feet, unobstructed view, able to move the vehicle, is what keeps a driver from unknowingly leaving a hazmat load unattended.