A pilot sees a red stop bar lit across the taxiway at the runway holding position. ATC has cleared the pilot onto the runway. What should the pilot do?

1. 1Cross, because ATC gave a clearance
2. 2Cross, but only if no aircraft are in sight
3. 3Cross, but only at a slow taxi speed
4. 4Stay stopped at the bar and call ATC

Source: Aeronautical Information Manual (FAA, Basic with Change 3, 9 July 2026), AIM 2-1-10 Taxiway Lights, page 134