Road characteristics database-WKD/Maximum Speeds

The Road Characteristics Database is a collection of databases each with a relevant road attribute
this can be linked to the national road stock (NWB). These can be road characteristics
include, for example, the maximum speed, the width of the road or the presence of entry. There is a separate file for each of these road features.
The Road Characteristics Database Maximum Speeds contains speed limits for all roads in the NWB.
With the
road compartment_ID can be linked to the NWB’s geography.WKD is
early 2017 for the whole of the Netherlands filled with data provided by municipalities.Since that
now are the new traffic decisions, via Knowledge and Operations Centre for Official
Government publications (KOOP) used to detect and detect changes in speed limits processing.
The NWB changes faster than speed limits are being made by road managers

delivered or placed in SALE.
By means of algorithms, the speed is where necessary

supplemented by short intermediate road sections.
As a result, a few percent of the

speed limit unknown.

NB:
In residential areas with a maximum speed of 30 km/h, or a residential area, this leads

to great deviations from reality.
Since 2017, the number of roads with a

60 km limit increased significantly.

The possible speeds that can be filled are 5, 15, 20, 30 40, 50, 60, 70, 80, 90,

100, 120.130 km/h and unknown.
Speeds only apply to roads that are open

for car traffic.
On cycle paths, footpaths and other roads that are not open to

car traffic is unknown for speed.
The same goes for the ferry connections.

The file provides variable maximum speeds with a start time and an end time.
These are

especially applicable to motorways.
Outside this period with the indicated starting time

and the end time is an alternative speed.
So, for example, between 6:00 and 19:00 applies 100

km/h and beyond, the maximum speed is 120 km/h. Other window times than those on the

motorways are not present in the file unless they are by the road manager

indicated.

The road characteristics database for speeds also contains the recommended speeds that apply to a

particular road compartment or part of it.
Now are only advisory speeds for the national roads

included in the file, but in the future this will be expanded with the advisory speeds for

the underlying road network.