It indicates helping and saving sign
A red plus sign, also known as the "Rod of Asclepius," is commonly used as a symbol for healthcare and medical professionals. It originates from Greek mythology, where Asclepius was the god of medicine and healing. The symbol is associated with healing and medicine due to its historical significance and recognition as a universal medical symbol.
The red plus sign in a hospital typically indicates a location for emergency services or urgent care. It is often associated with medical facilities that provide immediate attention to critical health issues. This symbol helps guide patients and visitors to areas where they can receive prompt medical assistance.
It is not an internationally accepted sign for identifying easily for a stranger who does not know the language of the region. We have swallowed this cross symbol of Jesus Christ silently along with the 'English Medicines' . Even the Arabs know this. They have a crescent moon with a wine glass and a snake round it to represent drug store or a hospital. It is high time Hindus must have an OM mark for that.
The red octagon around the HHPS symbol means its "Dangerous" also its a Danger sign
The plus sign is actually the red cross on the Swiss (Switzerland) flag, as the red cross foundation was founded by a Swiss woman. So the red cross has stayed from the original logo.
Positive is either red or has a "+" symbol.
The male sign is a blue ♂ and the female sign is a pinkish-red ♀
Red Background With White Cross/Plus Sign In The Middle
the general colour is a green background with a white (equal sided) cross placed in the centre. the green and white is used for first aid bags also yet this is not strictly enforced but GENERALLY used
The red cross sign or plus sign as it is often called shows that these people are not a part of conflict and are simply there to help.
A good one would be the cross thing with the snake on it. That's really common. Or a red background with a white plus sign(one arm is no bigger than the others) is also common.
The red wire is Positive, (+) and the Black wire is Negative. (-)