“Vehicle” means, except as provided in subsection (b) of this section, any device in, on, or by which any individual or property is or might be transported or towed on a highway. “Vehicle” includes a low speed vehicle and an off–highway recreational vehicle. “Vehicle” does not include: An electric personal assistive mobility device, as defined in § 21–101(j) of this article; or A personal delivery device, as defined in § 21–104.5 of this article.