East Nippon Expressway Co., Ltd. Corporate Site

NEXCO EAST

DraPla

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We analyze causes of traffic congestion and implement countermeasures to solve traffic congestion and mitigation

Cause of traffic jam

In about 70% of traffic intensive congestion, of which In-bound slope and sag part ※ is about 61%, interchange confluence portion was about 10%. Toll booth congestion has been almost eliminated by the spread of ETC. (2017)

※ Out-bound from the hill In-bound is called a recess approaches the slope and sag section. For more information about the congestion occurrence mechanism and the congestion measures,HereExternal link: Another window display

Cause of traffic jam

Implementation of Congestion Elimination / Mitigation Measures

Due to various measures, traffic congestion loss time * decreased to about 50% of peak time in 2008, but it increased dramatically since 2009 when holiday special discount was started. 2011 decreased due to the holiday special discount (upper limit of 1,000 yen in rural area), but it increased again due to earthquake restoration work and the increase in traffic volume after that. Because traffic jam loss time is decreasing from 2013, as the situation is still high, we analyze the cause of traffic congestion continuously to suppress the loss of valuable time of customers and promote traffic congestion countermeasures .

※ Indicator of the effect of congestion on the number of units · time

Trend of congestion lost time (2005 - 2015)

1 Measures for traffic congestion

Measures against hardware
Measures against hardware
Measures for software
Measures for software
【Improvement of road structure】

We add lanes, install climbing lanes and improve lamps where traffic congestion is becoming apparent.

Photograph of Construction
【Maintenance of ETC】

Compared to the start of ETC full-scale introduction, the toll gate congestion was almost canceled.

Trends in traffic volume at major toll booths

【Call for speed recovery by LED display board】

Sag part ( Out-bound from the hill In-bound portion of the change in slope) and In-bound in order to solve the congestion by the speed drop in the hill, the call for speed recovery, we are near the beginning of the congestion.

Sag portion and the In-bound slope, etc.
【Providing traffic jam prediction information】

To avoid traffic jams and provide a comfortable drive, we provide traffic prediction information on the Internet etc.

computer

computer(http://www.drivetraffic.jp/External link: Another window display

smartphone
Smartphone (http://www.drivetraffic.jp/)

mobile phone
Mobile phone (http://m.drivetraffic.jp/)

Congestion Forecast Guide
Congestion forecast guide (provided during the traffic congestion period)

2 Measures against accident congestion

Traffic Safety Measures

 事故そのものを減らすための交通安全対策も推進しています。

Acceleration time reduction

 早期発見、現場到着時間の短縮、事故車など障害物の早期排除に努めています。

3 Measures for construction congestion

Selection of work implementation date / time zone

 過去の交通量や渋滞実績を基に、渋滞が起こりにくい時間帯・曜日を厳選して工事を実施しています。

Reduction of construction number

 新しい工法の導入やメンテナンスフリー化により工事回数の削減に努めています。

Proper information provision

 工事規制の事前広報の実施、的確な情報提供に努めています。