This road sign means: Image: https://www.dmv-written-test.com/images-car/virginia-right_curve_35_mph.png

1. The road ahead curves right. Slow down to the safe speed indicated.
2. Divided highway begins. Slow down to the safe speed indicated.
3. Merge. Slow down to the safe speed indicated.
4. Winding road ahead. Slow down to the safe speed indicated.