What is indicated by a sign instructing to keep left?

The sign instructing to keep left serves to inform drivers that they should stay on the left side of the road. This instruction is particularly important in countries like the Cayman Islands, where vehicles drive on the left side of the road. The correct understanding of the sign is that it guides traffic flow and ensures safety by directing drivers to remain in the left lane.

Choosing to keep left helps prevent confusion and potential accidents that might occur if drivers were to inadvertently drift into the right lane, where oncoming traffic would be.

In the context of other options, the instruction does not imply driving on the right side of the road, merging into traffic, or simply keeping right if the symbol was reversed, as those scenarios do not align with the specific directive provided by the sign. Thus, the essence of the sign reinforces the importance of maintaining the designated lane based on the local driving regulations and road usage.