There is a historical background to this.
Until 1973, there was only a police emergency number. The unified emergency number 112 was introduced in Germany on September 20, 1973. Background to its introduction: The catalyst was the tragic accidental death of eight-year-old Björn Steiger in 1969; his parents subsequently campaigned for an improved German emergency response system and established the Björn Steiger Foundation. The decision: Federal and state authorities adopted the unified numbers 110 and 112 in September 1973, as emergency services had previously often been accessible only in large cities and via cumbersome phone numbers.