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NEXCO EAST Kazo Management Office (Kazo City, Saitama Prefecture), Chiba Management Office (Chiba City, Chiba Prefecture), Yawara Management Office (Tsukubamirai City, Ibaraki Prefecture), and Tsukuba Construction Office (Tsukuba City, Ibaraki Prefecture) will be carrying out repairs to the road surface and repairs and inspections of road structures on the C4 Ken-o Expressway (hereinafter referred to as the "Ken Ken-O Road") between the Bando Interchange (hereinafter referred to as the "IC") and Taiei Junction (hereinafter referred to as the "JCT"), as well as implementing night-time road closures to carry out construction work related to the widening to four lanes.
We apologize for any inconvenience this may cause, and we ask for your understanding and cooperation in allowing yourself plenty of time when heading out.

1. Closed section and date and time

1. Closed section
   Ken-O Road and Outer Loop Bando IC to Daiei JCT
   Section Ⅰ①:

   Bando IC to Amihigashi IC

   Section Ⅰ②:

   Joso IC to Ami Higashi IC

   Section II:

   Ami East IC-Daiei JCT



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

2. Detour

When taking detours, please refer to the attached sheet below for the road closure sections of Section I①　, Section I②,　and Section II.

Detours will increase the time required, so please take time to go out.

3. Regarding transit adjustments due to suspension of traffic

For customers who exit Expressway due to a road closure, detour around the closed section, then re-enter and transfer in the forward direction, a "transfer adjustment" will be implemented in which the toll will be adjusted according to the section of the expressway used.
(See Appendix 2 (I-II) [PDF: 877KB])

Transfer IC

《Section Ⅰ①: Bando IC to Ami Higashi IC》
*June 2nd (Monday) - 3rd (Tuesday)

1. Bando IC is an ETC-only toll gate, but vehicles other than ETC vehicles can also use it as an exit IC and re-entry IC when the road is closed. If you are using Bando IC in a vehicle other than ETC, please use the lane marked "support", stop temporarily, and follow the on-site information and instructions of the staff.

《Section Ⅰ②: Joso IC to Ami Higashi IC》
*Wednesday, June 4th to Friday, June 6th

1. Bando IC is an ETC-only toll gate, but vehicles other than ETC vehicles can also use it as an exit IC and re-entry IC when the road is closed. If you are using Bando IC in a vehicle other than ETC, please use the lane marked "support", stop temporarily, and follow the on-site information and instructions of the staff.

《区間Ⅱ：阿見東IC～大栄JCT》　
※6月16日（月）～20日（金）

1. Ushikuami IC is an ETC-only toll gate, but non-ETC vehicles can also use it as an exit IC and re-entry IC when the road is closed. If you are using Ushikuami IC in a non-ETC vehicle, please use the lane marked "support," stop temporarily, and follow the on-site signs and instructions of the staff.

How to use transit adjustment

ETC customers

• For customers using ETC, please drive wirelessly at designated outflow ICs, and also wirelessly drive at re-inflow ICs. (Transfer certificates are not 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 such as cash

• Customers paying with cash, etc. should receive a "transfer certificate" at the outflow designated IC, then take a "transit ticket" at the re-inflow IC, and then take the "transition certificate" at the toll booth where they pay the toll for the first time. Please hand over your ``book'' and ``traffic ticket.''

Common to ETC and cash customers

• 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. Overview of construction etc.

In addition to repairing the pavement and inspecting road structures, construction work will be carried out on the inner and outer loop of Ken-O Road between the Bando IC and the Daiei JCT, in addition to construction work to widen the road to four lanes. In order to minimize inconvenience to customers, the road will be closed at night on weekdays when traffic volume is low, and construction work will be carried out in a concentrated and efficient manner. We ask for your understanding and cooperation so that you can use Expressway safely and comfortably.

Five. How to obtain traffic information

(1) Guidance by distribution / posting

• Notice signs, posters and leaflets will be posted at toll booths and rest facilities nearby.
• 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
  埼玉情報　050-3369-6611
  茨城情報　050-3369-6608
  千葉情報　050-3369-6612
  【PC】https://www.jartic.or.jp/

(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 official X (formerly Twitter) and LINE accounts.
  [X (old Twitter)]
  "NEXCO EAST (Kanto)" (@e_nexco_kanto) Real-time traffic information
  “NEXCO EAST (Kanto Construction Regulations)” (@e_nexco_kanto_k) Decision to implement construction regulations
  [LINE]
  "NEXCO EAST" (@e-nexco) Road closures and weather information