Final answer:
The description given does not match standard road signs for indicating left or right turns, which usually show an arrow pointing in the turn direction. Instead, alert or warning symbols are designed for caution and can differ by region.
Step-by-step explanation:
The question seems to be confusing the function of road signage with alert or warning symbols that specifically indicate the intention to make left or right turns. Typically, a sign indicating a turn would show an arrow pointing in the direction of the turn, while alert or warning symbols can vary based on the country or region but are designed to capture attention and convey a need for caution or awareness without always specifying turn directions. The description provided does not correspond to conventional traffic signs used to indicate left or right turns.