diff --git a/schema/transportation/segment.yaml b/schema/transportation/segment.yaml
index 306bc188..98b22acc 100644
--- a/schema/transportation/segment.yaml
+++ b/schema/transportation/segment.yaml
@@ -23,6 +23,8 @@ properties:
         required: [class]
         properties:
           class: { "$ref": "#/$defs/propertyDefinitions/roadClass" }
+          subclass: { "$ref": "#/$defs/propertyDefinitions/subclass" }
+          subclass_rules: { "$ref": "#/$defs/propertyDefinitions/subclassRulesContainer" }
           access_restrictions: { "$ref": "#/$defs/propertyContainers/accessContainer" }
           level: { "$ref": "../defs.yaml#/$defs/propertyDefinitions/level" }
           level_rules: { "$ref": "#/$defs/propertyContainers/levelRulesContainer" }
@@ -78,13 +80,9 @@ properties:
         - living_street   # Similar to residential but has implied legal restriction for motor vehicles (which can vary country by country)
         - trunk
         - unclassified    # Known roads, paved, but subordinate to all of: motorway, trunk, primary, secondary, tertiary
-        - parking_aisle   # Service road intended for parking
-        - driveway        # Service road intended for deliveries
-        - alley           # Service road intended for rear entrances, fire exits
+        - service         # Provides vehicle access to a feature (such as a building), typically not part of the public street network
         - pedestrian
-        - footway
-        - sidewalk
-        - crosswalk
+        - footway         # Minor segments mainly used by pedestrians
         - steps
         - path
         - track
@@ -164,11 +162,11 @@ properties:
             access: { "$ref": "#/$defs/propertyContainers/accessContainer" }
             prohibited_transitions: { "$ref": "#/$defs/propertyContainers/prohibitedTransitionsContainer"}
     roadFlag:
-      description: Simple flags that can be on or off for a road segment
+      description: >-
+        Simple flags that can be on or off for a road segment. Specifies physical characteristics and can overlap.
       type: string
       enum:
         - is_bridge
-        - is_link
         - is_tunnel
         - is_under_construction
         - is_abandoned
@@ -214,6 +212,18 @@ properties:
             minLength: 1
             pattern: ^(\S.*)?\S$    # Leading and trailing whitespace are not allowed.
           wikidata: { "$ref": "../defs.yaml#/$defs/propertyDefinitions/wikidata" }
+    subclass:
+      description: >-
+        Refines expected usage of the segment, must not overlap.
+      type: string
+      enum:
+        - link             # Connecting stretch (sliproad or ramp) between two road types
+        - sidewalk         # Footway that lies along a road
+        - crosswalk        # Footway that intersects other roads
+        - parking_aisle    # Service road intended for parking
+        - driveway         # Service road intended for deliveries
+        - alley            # Service road intended for rear entrances, fire exits
+        - cycle_crossing   # Cycleway that intersects with other roads
     speed:
       description: >-
         A speed value, i.e. a certain number of distance units
@@ -635,6 +645,16 @@ properties:
         required: [value]
         properties:
           value: { "$ref": "../defs.yaml#/$defs/propertyDefinitions/level" }
+    subclassRulesContainer:
+      description: Set of subclasses scoped along segment
+      type: array
+      items:
+        type: object
+        allOf:
+          - { "$ref": "../defs.yaml#/$defs/propertyContainers/geometricRangeScopeContainer" }
+        unevaluatedProperties: false
+        properties:
+          value: { "$ref": "#/$defs/propertyDefinitions/subclass" }
     surfaceContainer:
       description: Physical surface of the road. May either be
         specified as a single global value for the segment, or as