Is it permitted to stop any type of vehicle where the following signpost is placed?

1. Yes, during day time only.
2. Yes, when there are many available parking spaces.
3. Correct answer: It is forbidden, except for a vehicle with a tag, as stated on the sign.
4. Any vehicle having a regular handicapped pass is allowed to park there when the spot is available.

WhyOnly vehicles of wheelchair users with the matching tag may stop and park in a disabled spot. Even if the spot is free and even for a moment.