Final answer:
An edge line that angles toward the center of the road usually means the road ahead is narrower, which alerts drivers to possibly upcoming constricted road space.
Step-by-step explanation:
An edge line that angles toward the center of the road typically indicates that the road is narrower ahead. This is a form of traffic control meant to alert drivers of upcoming changes in road width, particularly in areas where there might not be enough room for two vehicles to pass side by side, such as near a narrow bridge or in a construction zone. It does not necessarily require you to turn right but to be cautious of the reduced space.