Speed limit data for each road
- This data shows Speed limit (legal speed limit) for each road, expressed in 10 km/h increments (20-120 km/h).
MapFan DB Road Map Database
Speed limit data
This highly reliable data meets diverse needs, including the display and visualization of detailed speed distributions on maps and GIS, as well as the development of high-precision routing, accurate arrival time predictions, fuel consumption calculations, hazard predictions, and safe driving support functions. For example, it contributes to solving the following problems:
- Optimizing logistics routes and improving the accuracy of travel time predictions.
- Improving the user experience for route guidance and estimated arrival times in car navigation and map apps.
- Improving the prediction accuracy and validation of ADAS simulations.
How can Speed limit data transform your business? We present specific use cases and examples that offer hints for solving challenges in our case studies section.
Data Details
Road speed limit and sign data
- This data is based on speed limit signs, speed limit markings, and speed limit diagrams (for some routes only), and covers everything from expressways and national highways to narrow streets.
Table-formatted data per road link
- The data will be provided in a table format linked to each road link.
*This data is provided as optional data for the road network.
Why not try using GeoTechnologies' MapFan DB?
Expected usage
- Visualization of accurate speed limit distribution
By displaying Speed limit data on GIS tools and web maps, you can use it for advanced area analysis and evaluation, such as investigating the distribution of speed limits in specific areas or checking wide-area speed limit information.
- Improving the user experience of car navigation and map apps
By displaying the speed limits set for the current location and the road ahead to the driver, this system can be used for alerting drivers and supporting safe driving. Furthermore, it can provide accurate route guidance and estimated arrival times that are in line with actual speed limits, allowing users to enjoy a smooth and stress-free travel experience.
- Optimizing logistics costs and improving delivery efficiency
In logistics and transportation operations, this system enables travel time predictions based on real-world speed limits. It can be used to calculate travel time and estimated arrival times considering speed limits along the route, leading to concrete benefits such as optimized delivery schedules, reduced delay risks, lower fuel costs, and reduced driver workload.
- Improving the prediction accuracy and validation of ADAS simulations
In ADAS (Advanced Driver-Assistance System) simulations, this data incorporates complex real-world speed limits, serving as foundational data for AI-driven speed adjustments and safe operation decisions. This supports improved prediction accuracy and advanced verification of the system.
FAQ
How often is Speed limit data updated?
We update it 12 times a year.
Because Speed limit are subject to change due to laws and road structures, we regularly update our data to ensure that it always reflects the latest information.
How can this data be used in navigation?
The navigation system can display the speed limit set for the current location and the road ahead, which can be used to warn drivers about exceeding the speed limit.
In what format is Speed limit information provided?
The data is digitized as code values in 10km increments, ranging from 20km/h to 120km/h.
Which region's roads does this data cover?
This project covers roads throughout Japan (from expressways to ordinary roads), including narrow streets less than 3 meters wide.
To ensure the safety of our delivery drivers, we would like to accurately visualize the speed limits along delivery routes on a map. Is this possible by purchasing GeoTechnologies' "Maximum Speed Data"?
Yes, it is possible.
・Provided format:
Our "Speed limit data" is provided in a data format (Shapefile or PostGIS format) that can be easily displayed and visualized using GIS software.
• Data usage:
This data is an optional product for our road network data. By using a simple table join with road link IDs, it accurately links speed limit information, maintained for each road link, to the road network, allowing for use in map display and other applications.
This allows for easy display and visualization of speed limits along driving routes using color coding or other methods in maps and navigation systems for delivery drivers. This directly contributes to raising awareness among drivers about speeding and providing safe driving education, thereby improving operational safety.
Is it possible to determine whether the speed limit changes depending on the time of day or weather conditions?
Yes, we store information to determine whether Speed limit is variable, and this can be used to indicate whether a section has a variable Speed limit when displaying Speed limit on a map.
