Final answer:
The indication (23-88) does not match standard traffic signs, and more context is needed to provide its meaning. Generally, one should stop at the first sign of uncertainty and follow traffic signals when present.
Step-by-step explanation:
The indication shown as (23-88) on a traffic sign does not correspond to any standard traffic sign meanings such as proceed with caution, stop immediately, no entry, or one way traffic. Typically, traffic signs would have clear symbols or numbers that represent speed limits or other standard regulations. Without more context or a visual representation, it's difficult to provide an exact meaning for (23-88). However, referencing the information provided about road signs and traffic signals, it seems that one should always stop at the first point of difference and proceed with caution when unsure of the signage or when encountering unfamiliar signs.
Moreover, in the presence of a traffic signal, vehicles are required to slow down and adhere to the indications of the signal lights, such as stopping at a red light or yielding as indicated by a yellow light, suggesting cautious driving behavior.