reading the signal…
Signals / Object / Street-level imagery
in Baltimore, MD·counted·175 all time
A covered bridge is a roofed roadway bridge, typically built from timber with enclosed or partially enclosed sides.
Counted, not streamed: Covered Bridge 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.