Road Lighting Service Area

Yamagata Expressway Sagae Service AreaSagae City, Yamagata Prefecture

LED lighting provides a pleasant and secure lighting ambiance at a service area situated in a place blessed with views out over the mountain ranges

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  • LED
  • Updating the parking area lighting to LED whilst retaining the existing lighting poles, both a pleasant lighting environment and significant energy savings have been delivered.

  • Nighttime view of the large parking area, where ample levels of brightness are maintained whilst also being mindful of light spillage into surrounding areas.

  • LEDioc ROAD luminaires illuminating the parking areas.

  • LEDioc AREA type-D pole lights deliver a comfortable lighting ambiance for the pedestrian areas, with their omnidirectional light distribution.

  • LEDioc AREA type-D pole lights illuminating the parking areas.

  • Daytime view of the integrated Sagae Service Area, which can be accessed from both directions of the expressway.


Installation date

November, 2023

The Yamagata Expressway is a freeway linking Murata Town in Miyagi Prefecture to Tsuruoka City in Yamagata Prefecture. With its accessibility from both directions being a notable feature, the Sagae Service Area is located between the Sagae Interchange and the Nishikawa Interchange on the Yamagata Expressway; equipped with Smart IC compatibility, the service area is also the only one to be found along the 110km length of the route.

Embarking upon a program of works to renovate the lighting along the Yamagata Expressway, the Yamagata Management Office at the Tohoku Branch Office of the East Nippon Expressway Company, NEXCO EAST, updated the lighting at IC, SA, and PA across 10 locations to LED. At the Sagae SA, the existing HID luminaires for road and pedestrian routes were replaced with LED luminaires whilst retaining the existing poles, with additional LEDioc AREA type-D pole lights also installed in certain pedestrian areas. Starting with the use of LEDioc ROAD luminaires to illuminate the parking areas, each luminaire was carefully selected to provide lighting solutions appropriate and suited to the requirements of each area, delivering both energy savings and a safe and pleasant lighting environment.

Since the Great East Japan Earthquake of 2011, the Tohoku Branch Office of the NEXCO EAST has planned for key SA and PA to also serve as emergency evacuation areas. To this end, dimming measures have been implemented for some of the LED road luminaires installed in the parking areas, which can reduce luminaire output to 30% so that they are still able to deliver the minimum required illuminance levels for emergency evacuation areas (3ℓx) whilst operating on emergency backup power supplies; by comparison with a thinning out method, the resulting light is uniform. With numerous crop cultivation areas being located in the vicinity, additional consideration was also necessary in ensuring the lighting design was sensitive to the avoidance of light spillage.


  • LEDioc ROAD Expressway type - 40

  • LEDioc AREA type-D - 22