EnhancedRoad Aligned

229
Updated
02 Feb 2018

This dataset was last updated on NationalMap Data Service on 02 Feb 2018.

Critchlow Enhanced Roads Network, built on top of the Critchlow Formed Road Network, is a nationwide network specifically optimised for routing applications.

This layer has been fully reviewed to a geofraphic accuracy of +/- 2 metres of real world accuracy.

The following notes from the Critchlow Formed Road Network are also applicable here:

A formed road is land that has been set aside and prepared for vehicle traffic. The surface of the road may be sealed, or it may be rough (wheel tracks), but it must be accessible in all weather conditions by a standard, non-SUV, family-type vehicle.

All formed roads that are named (publicly or privately owned, formally or informally named) will be represented within the Critchlow road network.

The Critchlow Road Network follows the following basic principles:
1) It is a connected network. All segments in the dataset will perfectly connect with their neighbouring segments where, in the real world, a vehicle can drive between the road sections represented by the connecting segments.
2) It uses nationally consistent naming standards for all roads, a nationally consistent set of prefixes and suffixes, and nationally consistently applied abbreviations for such prefixes and suffixes.
3) It is composed entirely of lines or polylines. No other type of object is acceptable, including multipolylines.
4) It represents real world road features, such as roundabouts, dual carriageways, ramps and slip roads.

Layer ID 87313
Data type Vector linestring
Feature count 230390
Primary key UNIQUE_ID
Services Vector Query API, Web Feature Service (WFS)

TurnRestriction_Line

20
Updated
02 Feb 2018

This dataset was last updated on NationalMap Data Service on 02 Feb 2018.

Turn Restrictions accompany the Critchlow Enhanced Road Network to provide instructions to routing engines on where turns are prohibited.

This line representation of turn restrictions is optimised for ESRI routing systems

Layer ID 87314
Data type Vector linestring
Feature count 3234
Primary key TURN_ID
Services Vector Query API, Web Feature Service (WFS)

TurnRestriction_Point

15
Updated
02 Feb 2018

This dataset was last updated on NationalMap Data Service on 02 Feb 2018.

Turn Restrictions accompany the Critchlow Enhanced Road Network to provide instructions to routing engines on where turns are prohibited.

This point representation of turn restrictions is optimised for MapInfo routing systems

Layer ID 87315
Data type Vector point
Feature count 3247
Primary key TURN_ID
Services Vector Query API, Web Feature Service (WFS)