iHighway is a service that provides traffic information for expressways nationwide. Use it to plan your highway trips, including departure times, routes, and rest stops, and to gather information on road closures and other issues.
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Main Features
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▼Traffic Map
Check the latest traffic information, including road closures and congestion, at a glance on the map. (Information is updated every 5 minutes.)
▼Road Closure Reopening Email Notifications
Receive an email when a road closure you're interested in is lifted.
▼Road Closure Work Information
Check the status of work being carried out to reopen a road closure. (This service is exclusive to the NEXCO West Japan area.)
▼Heavy Rain Information
If there is a possibility of heavy rain that could result in road closures or traffic restrictions, you can see at a glance which sections require caution. (This service is exclusive to the NEXCO West Japan area. Available from mid-April to mid-November.)
▼Snowy Road Information
Check traffic information specific to snowy roads, as well as current weather and road conditions. (This service is exclusive to the NEXCO West Japan area. Available from mid-November to mid-April (winter season only).)
▼Interchange Entrance/Exit (Ramp) Closure Information
Check ramp closure information (entrances to the main lane from the interchange entrance or exits from the main lane to the interchange exit are blocked).
▼Addition of Transfer IC Information
When ETC-equipped vehicles encounter road closures, you can check "Exit ICs" and "Re-entry ICs" where tolls and discounts are automatically adjusted and continued for transfers. (This service is exclusive to the NEXCO West Japan area.)
▼Live Camera
Check the current state of expressways and service areas/parking areas with live camera footage before setting off. (Live cameras are available year-round in the West Japan area, but are only available in winter in other areas with some exceptions.)
▼Route Search
Check traffic restrictions on searched roads and routes.
▼My Route Feature
By registering frequently used routes and sections as My Routes, you can check the latest information with just one tap. You can also receive email notifications of road closures and accident-related congestion along your My Route.

・Scheduled Emails
・Real-time Emails
- When a road is closed
- When a road is reopened
- When an accident occurs with heavy traffic
- When a heavy rain warning is issued

*Winter season only
・Real-time Emails
- When chain restrictions are in place
- When chain restrictions are lifted
- When winter tires are required
- When winter tires are removed
・Snowy Road Support Emails

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Recommended System
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Android OS 6.0 or higher
*Please note that the app may not function properly on some devices.

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Caution
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・Operating or looking at a mobile phone while driving is prohibited by the Road Traffic Act.
・Only use the app with a passenger, or on the highway, please park your car in a safe place such as a service area or parking area.
・An internet connection is required to use the app. It cannot be used offline (without a network connection).