Where infrastructure exists, sensors or cameras can indicate that a space or block appears free. The alert does not reserve it. Another vehicle may arrive first, and the data may be delayed or temporarily unavailable.
A city can use roadway sensors, image analysis, operational records or a combination of these sources. Some systems identify individual spaces; others show only an occupancy trend for a block or area. The interface should make that distinction clear.
What a useful map should show
- the last update time;
- the area covered by the system;
- whether the result refers to a space, block or wider area;
- free, occupied or high-demand indication;
- communication or sensor failures when known.
A green marker without timing and coverage can suggest certainty that the system does not have.
The street remains public. The indication does not block the space, remove a driver who arrived first or guarantee that the space is suitable. On arrival, the driver must still inspect the signs and real conditions, then activate parking through the authorized channel.
Occupancy data can guide the search and help municipal planning. It improves information; it does not buy priority.