Traffic Signals - VicMap Digital Road

dataset: TRAFFICSIGVDR
Point layer generated from the intersections (nodes) of linework depicting the road network. Points are attributed for the type of intersection, eg intersections with traffic signals, round abouts etc.
 
Citation proposal Citation proposal
(2007)

Traffic Signals - VicMap Digital Road

Department of Environment, Land, Water & Planning
 

Description

Title
Traffic Signals - VicMap Digital Road 
Alternate title
TRAFFICSIGVDR 
Resource Type
Dataset  
Supplemental Information
Related Documents: None 
Status
Obsolete  
 
 

Temporal

Time period
1996-01-01 
 
 

Spatial

Spatial representation type
Vector  
N
S
E
W


 

 

Maintenance

Maintenance and update frequency
As needed  
 
 

Format

Title
DIGITAL Microstation .dgn files 1 
 
 

Contacts

  Point of contact

Cited responsible party  

No information provided.

Cited responsible party  

No information provided.

Cited responsible party  

No information provided.

Cited responsible party  

No information provided.
 
 

Keywords

Topic category
  • Planning cadastre
  • Structure
  • Transportation
 
 

Resource Constraints

Use limitation
Licence fees and distribution charges apply. 
Classification
Unclassified  
 
 

Lineage

Statement
Dataset Source: The text is derived from the point layer derived from the intersections of linework defining the road network Dataset Originality: Derived 
 
 

Metadata Constraints

Classification
Unclassified  
 
 

Quality

Attribute Quality
Comments
There has been, and continues to be a vigorous quality control program in place to validate and verify the accuracy of the BEST Cad area. 
Positional Accuracy
Comments
The measure of accuracy given for VDR data is the source scale of the mapping from which the digital data was initially derived. Source map scales, from 1:40 to 1:25000. Cartographic generalisation of features may have occurred at topographic map scales of 1:25000. It is not possible to guarantee the final planimetric accuracy of the VDR other than estimate possible errors due to the positional accuracy of the source material and data conversion and manipulation processes. A conservative estimate of 5m and 20m for the standard deviation of the VDR within the Melbourne Metropolitan area, and the Rural areas respectively will be used in any data quality information. Alternate and equal ways of expressing this error are: * Not more than 10% of well-defined points will be in error by more than 8.2m for the Melbourne Metropolitan area and 33m for Rural areas. * The worst case error for the data is +/-15m for the Melbourne Metropolitan area and +/-60m for Rural areas 
Conceptual Consistency
Comments
The logical consistency of the VicMap Roads data is tested using a mixture of UNIX scripts and ARC/INFO commands. Where less than 1% logical consistency errors are allowed the entire population is tested. Where a less stringent limit is set for allowable errors, then a random subset of the relevant features in the tile is generally tested. The samole size is determined using statistical tables using the known population size of the relevant feature. 
Missing Data
Comments
Complete. There is no intention to increase the covearge of this dataset beyond what it already is. 
Excess Data
 
 

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