[C4] Ken-o Expressway Inner Loop Mobara Kita IC ⇒ Togane IC
Road closure notice

The latest regulatory information is​ ​DraTra​ ​Please see.

PDF version [PDF: 561KB]

　A road closure will be implemented on the inner loop of the C4 Ken-o Expressway (hereinafter referred to as the "Ken-O Road") between Mobara Kita Interchange (hereinafter referred to as the "IC") and Togane Interchange as follows, in order for the Chiba Prefectural Police to conduct an accident investigation.
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

Road name	section	Regulation content	Date and time
Ken-O Road	Mobara Kita IC ⇒ Togane IC	Road closure (inner loop)	Friday, February 28th, 10:30am - 12:00pm

• 予備日：
  令和7年3月6日（木）10時30分～12時00時
• The completion time may vary depending on the progress of the accident inspection.
• In stormy weather, it will be postponed to the spare day.

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

2. Detour

For detours, please refer to Appendix 1 [PDF: 156KB].
The detour will increase travel time, so please allow yourself plenty of time when traveling.

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 used. (See Appendix 2 [PDF: 146KB])

Transfer IC

Closed place	Outflow designation IC	Re-inflow IC
[Ken-O Road] (Inner loop) Mobara Kita IC ⇒ Togane IC	[Ken-O Road] (Inner circle) Mobara Chonan IC, Mobara Nagara Smart IC, Mobara Kita IC	[Chiba-Togane Road] (In-bound) Togane IC, Yamada IC, Nakano IC [Ken-O Road] (Inner loop) Togane IC, Sanbu Narito IC

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. How to obtain traffic information

(1) Road traffic information available 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/

(2) Road traffic information that can be obtained 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

5. Contact details for road closures

　千葉県警察　高速道路交通警察隊
（TEL：043-259-1718）