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

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.

Technical Details
Layer ID 87313
Data type Vector linestring
Feature count 235901
Primary key UNIQUE_ID
Attributes LABEL_ONLY, ROADNAME, ROAD_CLASS, LEGALITY, SURFACE, HIERARCHY, AV_SPEED, ONEWAY_TXT, ONEWAY_NUM, SH_EXTRACT, SHNAME, UNIQUE_ID, ROAD_ID, SPEED, YSKA, ROUTINGSPD, LENGTH_M, TTIM_MIN_S, TTIM_MIN_A, NO_LANES, FORD, RESTRICTED, STATE_HWAY, TUNNEL, BUSONLY, DATE_MOD
Services Vector Query API, Web Feature Service (WFS)
History
Added 15 Jun 2017
Last updated 10 May 2018
Revisions 28 - Browse all revisions
Current revision Imported on May 10, 2018 from Shapefile in NZGD2000 / New Zealand Transverse Mercator 2000.