This data contains estimated values for road width (minimum width) and is provided in an external table format linked to road links. This data can be used to determine whether a road is passable based on vehicle size. Road Width is available for both the "Road Network" and the "Road network（Minor road extended version)".
In car navigation and route search systems, it is possible to effectively avoid being guided onto narrow roads that are difficult to navigate. It can also be used to alert drivers when passing through narrow sections of a route, contributing to improved safety. Furthermore, in optimizing logistics and delivery routes, it prevents misdirection onto roads unsuitable for vehicle size, thereby improving driving efficiency.
This data represents road widths estimated using our proprietary logic and expressed in meters (with centimeter accuracy). It does not represent width values based on actual measurements taken on-site.
- The width values are included as an external table linked to the road links.
*This is optional data to be used in conjunction with the "Road Network Data".
- It can determine whether a road is passable based on the size of the vehicle. This allows for avoidance of being directed onto roads that are difficult to navigate during route searching.
- Can also be used to warn people about narrow sections within a route.
Based on vehicle width information and passability assessments, the system searches for the optimal route. This effectively avoids directing large delivery trucks into narrow sections where they cannot pass, reducing unnecessary detours and operational losses. By selecting the most suitable route for each vehicle size, it shortens delivery times, reduces fuel costs, and lessens the burden on drivers, contributing to the optimization of overall logistics costs.
By utilizing the function to search for routes that avoid narrow roads, taking vehicle size into consideration, drivers can enjoy a smooth and safe travel experience even around their destination. Furthermore, by issuing warnings in advance when narrow roads are present on the route, it can help reduce the risk of collisions and alleviate driving stress. This is especially effective when driving in unfamiliar areas or when driving large vehicles.
By visualizing Road Width on maps and GIS, we can quickly identify the distribution of narrow sections that act as bottlenecks in specific areas. This strongly supports data-driven decision-making, such as selecting optimal routes for emergency vehicles (fire trucks, ambulances, etc.) from a disaster prevention and mitigation perspective, formulating infrastructure development plans such as road widening in urban planning, and selecting areas for new businesses (store and factory construction, etc.).
By using this tool to simulate the routes for transporting heavy machinery and materials to construction and demolition sites in advance, you can reduce risks such as delays and detours during preliminary surveys and on-site transportation.
It can also be used to pre-verify whether the width of evacuation routes during a disaster can withstand the passage of evacuees and support vehicles, and to estimate the risk of evacuation congestion due to insufficient width.
This data does not represent width values based on actual measurements taken on-site. It is an estimated value calculated using our proprietary logic based on high-precision map data. Therefore, while it does not guarantee the absolute accuracy of survey results, it possesses sufficient accuracy for use in logistics, navigation, and area analysis.
The data width values are stored in meters (m). (Example: 2.0m, 3.5m)
This data is intended for route search and display purposes in logistics and car navigation systems, and is not intended for vehicle control (such as automatic acceleration/deceleration or steering). Furthermore, the data is an estimate and does not reflect fluctuations in actual road width due to road construction or obstacles. The final decision on whether to travel is expected to be made based on local traffic regulations and conditions, and the driver's responsibility.
The project targets roads within an area with approximately 95% population coverage, specifically local roads (narrow streets) that are crucial for optimizing logistics routes and enabling car navigation systems to avoid narrow areas.
The vehicle size (width) can be compared with input data and incorporated into route search logic to avoid narrow roads (narrow sections) that the vehicle cannot pass through. This enables efficient delivery route selection and hazard avoidance.
High-quality, high-precision, and highly up-to-date road data covering approximately 1.3 million km across Japan
Road data covering all of Japan, including even narrow streets less than 3 meters wide
Regulation information for specific vehicle types and sizes, such as trucks
