Alignment and Location System

Definition

Reference objects that locate the road along horizontal and vertical alignments.

Class kind

system

Abstract

yes

Depth

1

Origin

reference source

Ontology

engineering-reference-book.highway v0.1.0

Aliases

—

Abbreviations

—

Last changed

7/27/2026, 2:50:06 PM

Identification

Positive labels

Alignment and Location System

Negative labels

—

Visual features

—

Min identity clues

0

Evidence

Preferred views

plan, typical_cross_section, longitudinal_section, detail

Evidence types

view, detail, schedule, note, dimension, level, section_callout

Source trace required

yes

Measurements (0)

None — this class carries no measured quantities.

Relationships (1)

• part_ofhighway.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_number
• retain_document_page_bbox_and_evidence_id
• do_not_mix_drawing_revisions
• do_not_average_conflicting_values
• prefer_explicit_labels_over_shape_only
• match_plan_profile_and_cross_section_when_applicable

Provenance

Basis

taxonomy_spec

Project values included

no

mindmap_module_spec_taxonomy_highway

no page list

Children (9)

• Road Centreline highway.alignment_system.road_axis
• Chainage Station highway.alignment_system.chainage_station
• Horizontal Curve highway.alignment_system.horizontal_curve
• Vertical Curve highway.alignment_system.vertical_curve
• Longitudinal Profile highway.alignment_system.vertical_profile
• Carriageway highway.alignment_system.carriageway
• Traffic Lane highway.alignment_system.lane
• Median highway.alignment_system.median
• Junction or Intersection highway.alignment_system.junction