A sectional chart's legend includes a dedicated obstruction symbol labeled "Obstruction with high-intensity lights," distinct from the standard obstruction symbol. This symbol tells a pilot that —

Why: FAA-CT-8080-2H Legend 1 (p. 1-1) lists separate obstruction symbol entries, including one specifically for "Obstruction with high-intensity lights," so a pilot reading the chart can tell which tall structures already carry their own lighting.

• Confuses the high-intensity-light symbol with Legend 1's separate "Under construction or reported; position and elevation unverified" (UC) symbol, which flags unverified data, not lighting status.
• Wrongly ties the symbol to altitude; the high-intensity-light symbol only indicates the structure's lighting equipment — it says nothing about whether the structure exceeds any particular small UA altitude limit.