EPSG:1081

DATUM["Deutsche_Bahn_Reference_System",
    SPHEROID["Bessel 1841",6377397.155,299.1528128,
        AUTHORITY["EPSG","7004"]],
    AUTHORITY["EPSG","1081"]]

DATUM["Deutsche Bahn Reference System",
    ELLIPSOID["Bessel 1841",6377397.155,299.1528128,
        LENGTHUNIT["metre",1]],
    ID["EPSG",1081]]

DATUM["D_Deutsche_Bahn_Reference_System",
    SPHEROID["Bessel_1841",6377397.155,299.1528128]]

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "GeodeticReferenceFrame",
    "name": "Deutsche Bahn Reference System",
    "ellipsoid": {
        "name": "Bessel 1841",
        "semi_major_axis": 6377397.155,
        "inverse_flattening": 299.1528128
    },
    "scope": "Engineering survey and topographic mapping for railway applications.",
    "area": "Germany - onshore - states of Baden-Wurtemberg, Bayern, Berlin, Brandenburg, Bremen, Hamburg, Hessen, Mecklenburg-Vorpommern, Niedersachsen, Nordrhein-Westfalen, Rheinland-Pfalz, Saarland, Sachsen, Sachsen-Anhalt, Schleswig-Holstein, Thuringen.",
    "bbox": {
        "south_latitude": 47.27,
        "west_longitude": 5.86,
        "north_latitude": 55.09,
        "east_longitude": 15.04
    },
    "id": {
        "authority": "EPSG",
        "code": 1081
    }
}