Table D.22 -- EAs whose label begins with U
| Label | Groups | Reference type | References |
| UNCOVERING_HEIGHT_KNOWN | WATER_BODY_SURFACE | IR | [FACC, Annex B: HDI] |
| UNDERBRIDGE_CLEARANCE | DIMENSION, LAND_TRNSP, TRNSP | IR | [FACC, Annex B: UBD] |
|
UNDERLYING_MATERIAL- _CHARACTERISTIC |
MATERIAL | IR | [FACC, Annex B: UMC] |
| UNDERLYING_MATERIAL_TYPE | MATERIAL | IR | [FACC, Annex B: MCU] |
| UPSTREAM_HEIGHT | ABSTRACT_OBJECT, LOCATION | IR | [FACC, Annex B: HGU] |
|
URBAN_BUILDING_LIGHTING- _INTENSITY |
LIGHTING_AND_VISIBILITY, RATE_OR_RATIO | ||
|
URBAN_STREET_LIGHTING- _INTENSITY |
LAND_TRNSP, LIGHTING_AND_VISIBILITY, RATE_OR_RATIO, TRNSP, USAGE_REGION | ||
| URBAN_STREET_PATTERN | LAND_TRNSP, TRNSP, USAGE_REGION | IR | [FACC, Annex B: USP] |
| URBAN_TERRAIN_ZONE_TYPE | USAGE_REGION | IR | [UTZB] |
| USABLE_LENGTH | ABSTRACT_OBJECT, DIMENSION | ||
| USAGE | ABSTRACT_OBJECT, ADMINISTRATION, USAGE_REGION | IR | [FACC, Annex B: USE] |
http://www.iso.ch/iso/en/ittf/PubliclyAvailableStandards/ISO_IEC_18025_Ed1.html