reading the signal…
Signals / Object / Street-level imagery
in Birmingham, AL·counted·316 all time
The paved or compacted surface of a road, typically showing asphalt, markings, cracks, or repairs.
Counted, not streamed: Road Surface has no time series, so it is read as a footprint across places. All-time count by city.
Things that physically exist: street furniture, signs, buildings. All-time counts.