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ITN weights and width attribution
This page provides information on weight and width attribution in OS MasterMap® Integrated Transport Network™ Layer (ITN).
Go to: Weights and width features captured | Weights and width attribution | Information for customers (TOID updates)
All physical weight and width restrictions related to bridges in Great Britain have been captured where signed. These restrictions complement the existing Road Routing Information (RRI) features and, in particular, height restrictions. These point features have been associated to the underlying RoadLink feature.
Data is supplied on written request to existing ITN Road Network with RRI customers as a separate CSV file.
Please note this is a frozen dataset which uses the December 2009 data.
Examples of captured real-world weight and width features
The following photographs show examples of the kinds of real-world restrictions that are captured by the weight and width features.
Figure 1: Example of a real-world weight restriction (weak bridge).
Figure 2: Example of a real-world width restriction (narrow bridge).
Figure 3: Example of a real-world width restriction (pinch points).
Weights and widths attribution
|
|
Type |
Values |
Range |
Comments |
|
ID |
Integer |
|
|
Unique identifier |
|
maxGrossWeight
|
Float |
3, 4, 7.5 and so on |
|
This field will always be used unless the sign specifically states axle or unladen weight (textually or symbolically). |
|
maxAxleWeight |
Float |
As above |
|
|
|
maxUnladenWeight |
Float |
As above |
|
|
|
maxWidth
|
Float |
4.4 |
|
Metric width restriction (metres) |
|
maxCompWidthFeet |
Integer |
Integer 12’ 6” >12 |
|
Imperial width restriction (feet) |
|
maxCompWidthInch |
Integer |
12’ 6” -> 6 |
0 – 11 |
Imperial width restriction (inches) |
|
maxLength |
Float |
12.5 m |
|
Metric length restriction (metres) |
|
maxCompLengthFeet |
Integer |
12’ 6” >12 |
|
Imperial width restriction (feet) |
|
maxCompLengthInch |
Integer |
12’ 6” -> 6 |
0 – 11 |
Imperial length restriction (inches) |
|
refRoadLink * |
String |
|
|
Reference to the RoadLink TOID that the restriction applies to. |
|
roadName ** |
String |
|
|
The road name (if it exists) that the restriction applies to. |
|
coordX |
Float |
|
|
X coordinate based on British National Grid. |
|
coordY |
Float |
|
|
Y coordinate based on British National Grid. |
|
environmental |
Logical
|
T or F |
|
Logical field indicating whether the restriction is an environmental restriction or not. |
|
enviroInfo |
String |
’Except for loading‘, ‘Except for access’ |
|
Any qualifier information that appears on an environmental restriction sign. |
|
refRoadNode |
Logical |
T or F |
|
Indicator that the point references a RoadNode rather than a RoadLink. |
Notes for the table
If the refRoadNode field is ‘True’, the refRoadLink field is a reference to the RoadNode TOID rather than the RoadLink TOID.
If the refRoadNode field is ‘True’, it is possible that the RoadLink features either side of the RoadNode could have different roadNames. If this is the case, the two roadNames will be separated by ‘/’ (that is STATION ROAD/HILLSIDE). If only one of the RoadLink features is named, the roadName will be followed by ‘/’ (that is HAY LANE/).
No name will appear in the roadName column for DfT numbered road.
Information for customers (TOID updates)
One feature has been deleted from the November 2007 supply, ID 40899.
There are 34 new features (from ID 110066 to 110099).
The ITN data used as from the September 2008 Managed GB Set.
The TOIDs on the following features are updated due to changes to the network:
|
418 657 1288 1754 2926 6862 8882 8990 9290 9606 10582 10551 10582 11113 11295 12138 12249 12681 13812 |
13984 18974 19733 20402 21121 21854 21946 24835 25158 25478 25907 27036 27193 31588 31960 33499 35634 39761 43061 |
43227 46367 51518 52046 52706 53245 53883 55133 59035 64940 64947 66988 67545 68193 68196 68937 69542 70368 75578 |
76409 76779 77813 80554 80570 82515 83187 84226 87764 92462 97615 107291 110011 110012 109347 109359 109377 110044 |
In this section:
ITN Technical specification – home
ITN Road Routing Information (RRI) theme
ITN Path Routing Information (PRI) theme
Feature types and attribution in the Road Network theme
Feature types and attribution in the Road Routing Information theme
Feature types and attribution in the Urban Paths Network theme
Feature types and attribution in the Path Routing Information theme
Descriptions of ITN Layer attributes
Attribution checklists for the Road Network and Urban Paths Network themes
ITN attribute definitions and values
This web page is part of the technical specification for OS MasterMap® Integrated Transport Network™ Layer. For the terms that apply to use of this specification, refer to Purpose of this specification.