Inducement of the driver’s awareness of the signs and prompt judgments
Since it is necessary to accomplish complicated driving tasks such as destination search, acceleration / deceleration, and lane change, it is recommended that signs with high visibility readability are provided so that the visibility distance and the reading distance can be increased.
In the case of an exit sign for a linked road ramp, luminescent type signs that are distinct are appropriate.
Active luminescent type signs that can overcome bad weather conditions such as night condensation, freezing and fog are necessary.
Provide clear information for the selection of lane appropriate for the driver and direction
More secure traffic conditions through night visibility and maximum readability
Provide sufficient forecasting power for the route and method of travel to the destination
Specialized attraction that is distinct from nighttime urban facilities or lighting
Minimize driver’s perception and interpretation of signs