NEXCO EAST (Chiyoda-ku, Tokyo, Chairman: Shigejiro Yagi) takes measures to alleviate congestion during the Obon period (11 days from Thursday, August 7 to Sunday, August 17) depending on the cause of congestion. And summarized the effect of the measures.

Compared to last year, the number of passengers used decreased by about 3% due to the arrangement of the days of the week and the weather. Provide detailed traffic congestion prediction information And at locations where traffic congestion is expected, such as in the sag section "Providing speed recovery information by LED display board" Promote various measures to alleviate traffic congestion, including Approximately 32% reduction in traffic volume over 10 km Did. About 8% reduction in the number of traffic jams over 10 km Shows the same tendency as The effect of the traffic congestion mitigation measures was shown.

NEXCO EAST will analyze the factors that cause traffic congestion and promote traffic congestion countermeasures effectively and efficiently in order to provide customers with comfortable and reliable Expressway.

• Congestion volume is an index that indicates the scale of congestion (congestion length x congestion time)

1 Congestion alleviation effect by providing speed recovery information in the sag section

See Attachment-1 [PDF: 64KB]

In-bound Slope and sag section ^*1 Then In-bound When you approach a slope, you may unknowingly slow down and cause congestion. In order to alleviate such congestion, Tohoku Expressway, Kan-Etsu Expressway, and Gaikan Expressway, where large congestion was predicted, Providing information to promote speed recovery using LED (light emitting diode) display board with excellent visibility The we.

As a result of conducting 22 countermeasures this time, the amount of traffic congestion at all countermeasures decreased by about 14% compared to unmeasured days. Did.

Compared to unmeasured days near the Arakura parking area (PA) around the outer ring road during the Obon period Traffic speed near the top of the traffic jam has improved and traffic volume has decreased by approximately 32% There was a day I did

• ※ refers to the first recess, the road Out-bound from the hill In-bound point for change in slope

2 Traffic congestion mitigation effect by leveling lane usage before traffic congestion

See Attachment-2 [PDF: 60KB]

At junctions such as interchanges (ICs), traffic tends to be extremely biased toward the overtaking lane where you can drive at higher speeds in an attempt to avoid vehicles merging into the driving lane or slow speed vehicles, which causes traffic congestion. In places like this, Leveling lane usage will increase traffic capacity and ease traffic congestion Is planned.

This time, we provided information to promote the use of driving lanes with LED display boards at three locations.

During the Obon period Tohoku Expressway In-bound in the sheet pile near the IC, compared to the non-measures Date Congestion volume decreased by about 27% There was a day I did

3 Congestion relief effect at main toll gates due to the spread of ETC

See Attachment-3 [PDF: 20KB]

Main toll gates in the Tokyo metropolitan area during the Obon period ^*1 The ETC usage rate in Japan was about 74%, an increase of about 7% compared to the same period last year (about 67%). With the spread of ETC, Congested traffic congestion at the main toll gate during the Obon period ^*2 The amount of traffic congestion decreased by 97% compared to 2002, immediately after the introduction of ETC Did.

1. Tohoku Expressway Urawa TB, Kan-Etsu Expressway Niiza TB, Joban Expressway Misato TB, East Kanto Expressway Narashino TB (TB: Main Line Toll Gate)
2. Congestion due to traffic concentration at the toll booth, and does not include accident congestion and extension of traffic from connecting roads.

4 Changes in traffic associated with the use of ETC time zone discounts

See Attachment-4 [PDF: 50KB]

In the area of In-bound such as Tohoku Expressway, Kan-Etsu Expressway, Joban Expressway, late-night discount and early-morning night discount compared to before the introduction of ETC time discount system (2004). The traffic volume in the early morning and night when The introduction of the discount system has resulted in a shift in transportation. The ETC time zone discount will allow you to drive comfortably without getting caught in traffic, and will also alleviate traffic congestion by leveling the overall traffic.

During the Obon period Tohoku Expressway In-bound in Shiraishi near the IC is heavy traffic reduces the traffic volume of the time zone during the day, since early morning nighttime traffic with less traffic volume has increased, there is a day when congestion amount was reduced by approximately 33% or did.

5 Usage status of traffic congestion prediction information

See Attachment-5 [PDF: 31KB]

NEXCO EAST 's information site “DraPla (http://www.driveplaza.com/)”, etc., to provide traffic congestion prediction information for Expressway.

Expressway information site was renewed from "DoraNavi" jointly by three companies (NEXCO EAST, Central Japan, and West Japan) to "DraPla" on NEXCO EAST alone on October 3, 2007, traffic congestion prediction information We are averaging about 810,000 users a month, In the month of August, which is around the Bon Festival this year, it was about 2.07 million, about 2.6 times. We had you use many things. Also, Approximately 71% increase in August this year compared to the number of passengers used in April this year before the Golden Week traffic congestion period We had you use

By using the traffic jam prediction information and avoiding traffic jams and using the Expressway, you can drive comfortably and reduce traffic congestion on the Expressway. Please continue to use the traffic jam prediction information.