NZ Topo - object class road_cl

This page describe the road_cl object class used to represent objects in the NZTopo topographic database.


Any formed all weather route suitable for the passage of any vehicle.

Topo50 description

Most named roads are held in the data and shown on the printed maps. Be aware that there is no distinction in the data or on the printed maps between public and private roads. Un-named roads in rural areas shorter than 300m may not be captured. Also, not all motorway ramps in complicated spaghetti junctions are necessarily held in the data. Where 2 or more roads are in very close proximity, the roads held in the data and shown on the printed maps may be offset from one another to a distance of up to 30m - motorway on and off ramps are frequently offset;

Topo250 description

Only those significant by their size or location are held in the Topo250 data and shown on the Topo250 printed maps; these are a generalised subset of those shown on the Topo50 series

Representation specification

Representation specification showing road_cl

Click to enlarge image

Important information: The existence of a road or track does not necessarily indicate public right of access

See also: bridge_cl cattlestop_pnt ford_pnt gate_pnt track_cl tunnel_cl

Class attributes

Attribute Value
Object class road_cl
Entity class ROAD
Additional entity class Not applicable
Object inheritance simple_line
Entity source US Standard Entity
Map series Topo50 Topo250 Ant50 Topo500
LSLIFF object class 123

Object attributes

Attribute LSLIFF code
Shapefile field
Data type
Attribute description Attribute values*
name 1001
Road names are sourced from the LINZ Data Service layer NZ Roads Subsections (Addressing) . NOTE road names are not added where the road forms part of a roundabout (in accordance with the ICSM Roads Data Model). Text data from July 2012 will be in UTF-8 format. If your system is not UTF-8 compliant, you will need to use the name_ascii attribute, which has had any macronated vowels removed. UTF-8 stands for Unicode Transformation Format-8. It is an octet (8-bit) lossless encoding of Unicode characters. UTF-8 encodes each Unicode character as a variable number of 1 to 4 octets, where the number of octets depends on the integer value assigned to the Unicode character. It is an efficient encoding of Unicode documents that use mostly US-ASCII characters because it represents each character in the range U+0000 through U+007F as a single octet. UTF-8 is the default encoding for XML. Values
"DARTMOOR ROAD"The inclusion of a road name does not represent legal access
name_macronated 1140
Indicates whether the entry in the name_ascii field contains a macronated vowel. Where the value is "Y" go to for a list of places or feature names within New Zealand that are gazetted and include macrons
This is a unique identifying number given to the Electoral/Landonline Road Centreline ID. It replaces the name_ID attribute in earlierTopo Road Centreline layers. This will enable users a direct link via the IDs to the NZ Road Centre Line (Electoral) layer
road_surface 1080
sealed : bitumen
metalled : gravel, shingle, or lime
unmetalled : dirt or clay
road_status 1081
under construction
road_number_of_lanes 1082
The number of paths available side by side for the simultaneous passage of vehicles on a road. Values
1Typically used to indicate a single traffic lane. But also used for roads designed for oncoming vehicles to pass, but which are narrow. Usually this is when the overall road width is less than 4m. See also road_width
road_highway_number 1083
{empty} The road is not a state highway
road_one_way_two_way 1085
one way accommodating one or more lanes of traffic in one direction only. Note that this attribute is being progressively populated as information becomes available
{empty} a two way road. Note that this attribute is being progressively populated as information becomes available
one way
name_ascii 9000
Text data from July 2012 will be in UTF-8 format. If your system is not UTF-8 compliant, you will need to use this attribute, which has had any macronated vowels removed.
UFID 1000
A unique identifier for use on Topo50 data in the LINZ Data Service. This is not a universal ID. The intention is to manage these ID’s as persistent, however this is not guaranteed and there will be instances where what appears to be a minor change to a feature may result in a new ID being assigned.
road_width 1127
This attribute is used primarily for roads that fall in between 1 lane and 2 lanes in terms of their physical width. It is applied primarily when the road_number_of_lanes attribute = 1. This attribute is being populated over time.Values
wideThe combination of road_number_of_lanes attribute = '1' and road_width = 'wide' is indicative of a road where, should 2 cars approach, both must slow in order to pass safely. This attribute is being progressively populated.
{empty}A typical width road

* See explanation of attribute values for more information about how attribute values are represented.

Change log

Feature version Revised Description
12 2017-07-24 Added road_width attribute
11 2016-08-24 Updated attribute description for 1 lane roads
10 2012-08-28 Updated map image and aerial view; added representation specification and example feature photographs
9 2012-08-28 Added scale-specific definitions
8 2012-08-16 Name attribute in UTF-8 format; added name_ascii attribute
7 2010-03-01 Updated attribute description road_one_way_two_way and added name_macronated attribute. Updated comments section.
6 2005-09-06 new attribute value for road_number_of_lanes
5 2003-06-30 new and removed attribute values
4 2003-05-27 updated attribute value
3 2001-11-23 Unspecified update
2 2001-03-05 comments
1 1999-03-01 initial status