← highway ontologyHighway Asset › Alignment and Location System
Road Centreline
highway.alignment_system.road_axisdraftEdit
Definition
Primary horizontal reference line of the road alignment.
- Class kind
- component
- Abstract
- no
- Depth
- 2
- Origin
- reference source
- Ontology
- engineering-reference-book.highway v0.1.0
- Aliases
- Centre Line, Road Alignment, Alignment Axis
- Abbreviations
- CL
- Last changed
- 7/27/2026, 2:50:06 PM
Identification
- Positive labels
- Road Centreline, Centre Line, Road Alignment, Alignment Axis
- Negative labels
- —
- Visual features
- long chain-dotted line with chainage ticks
- Min identity clues
- 2
Evidence
- Preferred views
- alignment_plan, plan
- Evidence types
- view, detail, schedule, note, dimension, level, section_callout
- Source trace required
- yes
Measurements (1)
| Name | Symbol | Unit | Required |
|---|---|---|---|
| Length | L | m/km | optional |
Relationships (1)
- locates
highway.asset
BOQ items (0)
None — no quantity is derived from this class directly.
Validation
- Blocking if missing
- no
- Human review allowed
- yes
no_evidence_no_numberretain_document_page_bbox_and_evidence_iddo_not_mix_drawing_revisionsdo_not_average_conflicting_valuesprefer_explicit_labels_over_shape_onlymatch_plan_profile_and_cross_section_when_applicable
Provenance
- Basis
- taxonomy_spec
- Project values included
- no
- mindmap_module_spec_taxonomy_highway
- no page list
Children (0)
None — this is a leaf class and can be deleted.