What does a space marked "handicapped visitors only" signify?

A space marked "handicapped visitors only" signifies that only visitors who possess the appropriate handicapped parking placards are authorized to park in that designated area. This designation is put in place to ensure accessibility for those who may have mobility challenges, providing them with equitable access to facilities and locations.

Visitors with such placards have demonstrated their eligibility to use these spaces based on specific criteria established by parking authorities. The fact that it specifies "visitors" indicates that this space is not intended for residents but rather for temporary guests who require closer parking accommodations.

The other choices do not align with this understanding: the notion that only residents can park there contradicts the designation as it explicitly states "visitors." The idea of allowing any vehicle after business hours would undermine the reserved nature of handicapped spaces, which should always remain reserved for those with the necessary permits, regardless of time. Lastly, reserving the space solely for emergency vehicles would limit its intended purpose, which is to support individuals with disabilities.