NZ Topo - object class road_cl

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

Description

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

Topo50 description

Most roads are held in the data and shown on the printed maps. Un-named roads in rural ares shorter than 300m are not captured. Also, not all motorway ramps in complicated spagetti junctions may be 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; Note that there is no distinction in the data or on the printed maps between public and private roads

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

AttributeValue
Object classroad_cl
Entity classROAD
Additional entity classNot applicable
Object inheritancesimple_line
Entity sourceUS Standard Entity
Map series Topo50 Topo250 Ant50
LSLIFF object class123

Object attributes

AttributeLSLIFF code
Shapefile field
Data type
Attribute descriptionAttribute values*
name1001
name
string
Road names are sourced from the Authoritative Streets and Placenames Database (ASP). 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.
"DARTMOOR ROAD"
{empty}
name_macronated1140
macronated
boolean
Indicates whether the entry in the name_ascii field contains a macronated vowel. Where the value is "Y" go to http://www.linz.govt.nz/placenames/find-names/macrons/index.aspx for a list of places or feature names within New Zealand that are gazetted and include macrons
Y
N
LOL_SUFI1131
rna_sufi
string
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
"1818030"
road_surface1080
surface
string
Values
sealed: bitumen
metalled: gravel, shingle, or lime
unmetalled: dirt or clay
sealed
metalled
unmetalled
road_status1081
status
string
under construction
{empty}
road_number_of_lanes1082
lane_count
integer
The number of paths available side by side for the simultaneous passage of vehicles on a road. Note: {empty} is a valid attribute when the road status value is under construction.
1
2
3
4
5
6
7
8
{empty}
road_highway_number1083
hway_num
string
Values
{empty}The road is not a state highway
"1"
{empty}
road_one_way_two_way1085
way_count
string
Values
one wayaccommodating 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
{empty}
name_ascii9000
name_ascii
string
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.
UFID1000
t50_fid
integer
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.
"3254886"

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

Change log

Feature versionRevisedDescription
102012-08-28Updated map image and aerial view; added representation specification and example feature photographs
92012-08-28Added scale-specific definitions
82012-08-16Name attribute in UTF-8 format; added name_ascii attribute
72010-03-01Updated attribute description road_one_way_two_way and added name_macronated attribute. Updated comments section.
62005-09-06new attribute value for road_number_of_lanes
52003-06-30new and removed attribute values
42003-05-27updated attribute value
32001-11-23Unspecified update
22001-03-05comments
11999-03-01initial status