The Telephone sign is a rectangular blue sign with a white telephone symbol. It indicates the presence of a public telephone nearby. According to German traffic laws, this sign informs drivers and pedestrians that they can find a telephone facility in the vicinity, allowing them to make calls if needed, especially in case of emergencies. It serves as a helpful reminder, particularly in areas where assistance or communication might be necessary, such as rural roads or less populated areas. If you have more questions about traffic rules or another sign, feel free to ask!