The latest regulatory information isDraTraPlease see.

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NEXCO EAST in Ichihara management office (Ichihara City, Chiba Prefecture), C4 Ken-o Expressway (hereinafter referred to as "Ken-O Road Chonan Mobara from") Yokoshiba Matsuo (Matsuo Yokoshiba) Interchange (hereinafter referred to as "IC") (Mobara We will close the road at night in order to install wire ropes and repair and inspect road structures at the IC.
In addition, Ken-O Road regard to Choshi access road is directly connected with the (Chiba road Corporation management), for Yokoshiba light (Hikari Yokoshiba) customers that has flowed from the IC can not flow out to the general road from Yokoshiba Matsuo IC, closed to traffic (inflow ban ).
We apologize for the inconvenience caused to our customers, but we ask for your understanding and cooperation so that you will have time to spare when you go out.

1. Closed section and date and time

(1) Closed section

• Attached to each line C4 The indications such as indicate the route number (numbering) of Expressway.

(2) Date and time

2. Detour

Please refer to Attachment-1 [PDF: 102KB] and Attachment-2 [PDF: 523KB] for detours.​
The detour will take longer, so please leave plenty of time.

3. Regarding transit adjustments due to suspension of traffic

If the closed section is section I + section II, the toll will be charged according to the section used by customers who temporarily flow out of the Expressway due to the closed section, bypass the closed section, re-inflow and transfer in the forward direction. We will carry out "transfer adjustment" to adjust. (See Attachment-3 [PDF: 152KB])

Transfer designated IC

How to use transit adjustment

<< ETC customers >>

• Customers using ETC are requested to run the outflow designated IC wirelessly and the re-inflow designated IC wirelessly. (No transit certificate will be issued for ETC vehicles)
• ETC time zone discount will be applied, considering the transited journey as one.
  Toll charges are adjusted at the time of billing, so they may differ from those displayed at the toll gate.
• Insert the same ETC card for all journeys and pass through the ETC lane at the tollgate.

<< Customers for cash, etc. >>

• Customers who pay by cash, etc. should receive the "passage certificate" at the outflow designated IC, and then get the "passport" at the re-inflow designated IC, and then make the "transfer" at the toll booth that pays the fare first. Please give us your "certificate" and "passport".

《Common to customers such as ETC and cash》

• If the suspension of traffic is released after the outflow designated IC is released, the fare will be adjusted even if it is re-introduced from the IC (including the outflow designated IC) in the closed road section in the forward direction.

Four. Construction overview

Ken-O Road Between Matsuo Yokoshiba IC and Mobara-Chonan IC, we will carry out wire rope installation work and repair / inspection of road structures to prevent head-on collision accidents in the provisional two-lane section.
This section is a two-lane section (one lane on each side), and it is difficult to secure a vehicle lane for construction work. Therefore, to avoid inconvenience to customers as much as possible, we will close the road on weekday nights when traffic is light. We will carry out the construction intensively and efficiently. This work is necessary to use Expressway safely and comfortably, so we ask for your understanding and cooperation.

Five. How to obtain traffic information

(1) Guidance by distribution / posting

• Notice signs, posters and leaflets will be posted at rest facilities around the area.
• A banner will be posted on the overpass on the Expressway.

(2) Road traffic information that can be obtained before going out

• NEXCO東日本お客さまセンター（24時間オペレーターが対応）
  ナビダイヤル：0570-024-024
  または：03-5308-2424
• NEXCO EAST Expressway Traffic Information Site "DraTra"
  
  Real-time information

  [PC] https://www.drivetraffic.jp/

  [Mobile] http://m.drivetraffic.jp/

  Construction regulation information

  [PC] https://www.drivetraffic.jp/construction-regulation
• 日本道路交通情報センター（JARTIC）　道路交通情報
  全国共通ダイヤル　050-3369-6666（携帯電話短縮ダイヤル　#8011）
  ※全国どこからでも最寄りの情報センターに接続します。
  全国・関東甲信越情報　050-3369-6600
  千葉情報　050-3369-6612
  【PC】https://www.jartic.or.jp/
• ハイウェイテレホン（5分毎に更新される最新情報を24時間提供）
  千葉局　043-257-1620
  （携帯電話・PHS短縮ダイヤル　#8162）

(3) Road traffic information available while using the Expressway

• Road information board
• Highway radio (AM1620kHz)
  The highway radio section is indicated by signs on the Expressway.
• Highway Information Terminal
  We will inform you of road information in an easy-to-understand manner by the monitor screens installed in SA / PA.
• VICS
  You can get road traffic information with VICS-compatible car navigation and other on-board devices.

• Information is also distributed on the official Twitter account.
  " NEXCO EAST (Kanto)" (@e_nexco_kanto) Real-time traffic information
  " NEXCO EAST (Kanto construction regulations)" (@e_nexco_kanto_k) Judgment regarding implementation of construction regulations