How winter speed limits and special speed limits are represented in HERE map data for FIN, Baltics and The Netherlands
Symptoms / Triggers
Understand how winter speed limits are represented in HERE map data.
Understand how seasonal speed limits are encoded for Finland, the Baltics, and the Netherlands.
Interpret Special Speed Situation conditions for winter or time-dependent speed limits.
Verify how winter or special speed limits are published in HERE map content.
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Quick Answer
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HERE represents winter and other special speed limits using the Special Speed Situation condition with the appropriate dependent type. For Finland and the Baltic countries, winter speed limits are represented using seasonal (approximate time) conditions, while the Netherlands uses time-dependent conditions for daytime and nighttime speed limits.
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Representation
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Finland & Baltics (Estonia, Latvia, and Lithuania)
Winter speed limits are coded as Single Link Condition: Special Speed Situation (Dependent).
Specific Winter Speed Limits are applied to many higher functional class roads during the winter time.
Winter Speed Limit are lower Speed limits for specific road segments to reduce risks with driving in winter conditions. Winter Speed Limits are generally in use from late October to early April. During this period Speed Limits of 80 km/h or above are lowered to 60–100 km/h.
For Finland, additionally, Winter Speed Limit signs cannot be distinguished from regular speed limit signs. Due to this, Speed limits of 60 km/h or above is ignored if the video is collected between mid-October to mid-April.
Special Speed Situation Dependent Type (Approximate Seasonal Time) is applied on all links that have different (specifically lower) speed limits during winter time (please also see HERE Country Specific Rules Data Specification).
Note: In Finland, Motorway sign or Motorized Vehicle Sign does not imply any specific speed limit. But always a posted sign will tell the current speed limit. If no sign is seen when, example entering the motorway, speed limit is 80km/h, if being outside BUA sign area.
Look also for Finland from https://data.consilium.europa.eu/doc/document/ST-10309-2021-ADD-6/en/pdf
The Netherlands
For combination of daytime and night time speed limits as shown in below image, Special Speed Situation condition is published with Dependent Type (Time-Dependent) with 100 km/h, and the Date/ Time Modifier 06:00-19:00 All Days.
Special Speed Situation example:
Representation:
Dutch authority of Motorways translated website (perhaps helpful):
https://www-rijkswaterstaat-nl.translate.goog/wegen/wetten-regels-en-vergunningen/verkeerswetten/maximumsnelheid?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en&_x_tr_pto=wapp
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Searchable Tags / Keywords
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HERE Map, Winter Speed Limits, Special Speed Limits, Special Speed Situation, Dependent Type, Approximate Seasonal Time, Time-Dependent, Country Specific Rules, Finland, Estonia, Latvia, Lithuania, Netherlands
Updated 3 days ago