The latest regulatory information isDraTraPlease see.

PDF version 【PDF: 784KB】

NEXCO EAST Tsukuba Construction Office (Tsukuba City, Ibaraki Prefecture) will implement nighttime road closures on the C4 Ken-o Expressway Ken-O Road Expressway (hereinafter referred to as "Ken-O Expressway") between Ushiku-Ami Interchange (hereinafter referred to as "IC") and Inashiki Interchange (hereinafter referred to as "IC") in order to carry out paving work related to the expansion to four lanes.
We sincerely apologize for any inconvenience this may cause, but we ask for your understanding and cooperation in allowing extra time when you go out.

1. Closed section and date and time

1. Road closure section:
   Ken-O Road Inbound and Outbound): Ushiku-Ami IC to Inashiki IC



2. Date and time
   Implementation date:

   July 27th (Monday) to July 31st (Friday), 2020

   Every day from 8pm to 5am the next morning

   Preparation day:

   August 3rd (Monday) to August 7th (Friday), 2020

   Every day from 8pm to 5am the next morning

2. Detour

For information on alternative routes, please refer to Attachment-1 [PDF: 289KB].
The detour will increase your travel time, so please allow ample time for your journey.

3. Regarding transit adjustments due to suspension of traffic

For customers who exit Expressway due to a road closure, detour around the closed section, and then re-enter to continue their journey in the same direction, a "transfer adjustment" will be implemented to adjust the toll based on the section of the expressway used. (See Attachment-2 [PDF: 258KB])

Transfer IC

1. Ushiku-Ami IC and Inashiki-Higashi IC are ETC-only toll gates, but they can also be used by vehicles other than ETC vehicles as designated exit and re-entry interchanges during road closures. If you are using Ushiku-Ami IC or Inashiki-Higashi IC in a vehicle other than an ETC vehicle, please use the lane marked "Support," come to a complete stop, and follow the instructions of the on-site staff and guides.

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. Construction overview

Paving work will be carried out Ken-O Road inbound and outbound) between Ushiku-Ami IC and Inashiki IC in conjunction with the expansion to four lanes. To minimize inconvenience to our customers, the road will be closed to traffic during weekday nights when traffic volume is low, and the work will be carried out intensively and efficiently. We ask for your understanding and cooperation so that you can use Expressway safely and comfortably.

• Between Ushiku-Ami IC and Inashiki IC, lane changes will occur due to construction work related to the expansion to four lanes.
  Please refer to Attachment-3 [PDF: 192KB] for further details.

Five. How to obtain traffic information

(1) Guidance by distribution / posting

• Posters and leaflets will be displayed at nearby toll gates and rest facilities.
• 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

  https://www.drivetraffic.jp/

  Construction regulation information

  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
  茨城情報　050-3369-6608
  千葉情報　050-3369-6612
  Homepage: 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.
• VICS
  You can get road traffic information with VICS-compatible car navigation and other on-board devices.

• Information is also distributed through official accounts on X (formerly Twitter) and LINE.
  [X (old Twitter)]
  "NEXCO EAST (Kanto)" (@e_nexco_kanto) Expressway information
  "NEXCO EAST (Kanto Construction Regulations)" (@e_nexco_kanto_k) Decision on implementation of construction restrictions
  [LINE]
  "NEXCO EAST" (@e-nexco) Road closures and weather information