Ontario Highway Linear Referencing System with Composite Listings

Linear referencing and composite listing data from the Government of Ontario's Linear Highway Referencing System (LHRS) provides a spatial framework for locating events along the provincial highway network. The system comprises three core files: a GIS route representation, base points dividing the network into sections, and feature points for additional described locations. Event locations are determined by driven distance from a given base or feature point along the LHRS route.

Use Cases

• Analyze event density along highway segments using driven distance measurements from LHRS Base Points.
• Integrate LHRS route spatial data with external GIS layers for network-wide infrastructure planning.
• Validate the location of reported incidents by referencing them against the composite listing of LHRS features points.

Strengths

• Data is maintained and published by the authoritative Government of Ontario.
• The three-file structure (route, base points, features points) provides a multi-faceted representation of the highway network.
• Data was last updated in March 2026, indicating active maintenance.

Limitations

• The dataset's size, row count, and specific column schema are not documented.
• Data is provided in multiple formats (HTML, XLS, ZIP) which may require consolidation and format conversion for analysis.

Provenance

Source

Government of Ontario

Collection Method

null

Time Range

null

Freshness

2026-03-25

Geography

Ontario, Canada highways