I'm afraid I cannot share your perspective that this sign solely represents a speed limit. When examining the sign, I notice several similarities with the living_street sign, such as the depiction of a person walking, a bicycle, and a vehicle. The only noticeable distinction is the absence of a house icon.
In order to gather further insights, I believe it would be beneficial to seek an additional opinion on this matter. I will kindly request Wemissyou to join our discussion, and I will respect and accept their decision.