Final answer:
The sign indicates that parking is allowed only for vehicles with a disabled license plate or windshield ID, ensuring accessible parking for individuals with disabilities.
Step-by-step explanation:
If a parking space has a sign indicating it is reserved for vehicles with a disabled license plate or windshield id, it means that only those vehicles that have a proper identification showing that the driver or passenger has a disability are allowed to park there.
In this scenario, the correct interpretation of the sign is option 2: Parking is allowed only for vehicles with disabled license plate or windshield id. This ensures that individuals with disabilities have closer or more convenient access to a location, which is essential for their mobility.