Smart Maintenance Highway(SMH) Project(SMH) ‫ﻣﺸﺮوع اﻟﺼﯿﺎﻧﺔ اﻟﺬﻛﯿﺔ ﻟﻠﻄﺮق اﻟﺴﺮﻳﻌﺔ‬What is SMH?
l SMH is company-wide initiative that intends to scrutinize solutions against issues, associated withonsite inspection and maintenance.
l It plans to actively introduce ICT, mechanization, and other innovations. We are setting up acomprehensive maintenance system which all elements are well harmonized with engineers
capability.
l It aims to secure long-term safety and reliability, leading to easy maintenance, efficient renewal andimprovements for expressway infrastructure.
n The "safety" which is our invariable mission is expressed by "dark green"and "comfort" is expressed by "light green“. 2 colors are adopted so that they
are mixed and harmonized into the corporate color of NEXCO.
n The "letter of" 8 imagines expressway, and means infinity. This expresses
our decision to work together to pursue and secure "safety" and "comfort“ permanently.

Promotion of SMH master plan
SapporoMoriokaYuzawa

Koriyama

Saku
MisatoProblem of Operation Process and Its Solution【Problem】
Current RIMSTaking data fromindividual system andprocess it【Solution】

Next Generation RIMS
Next Generation RIMS

Access data for
analysis in an
integrated fashion

・Inspection checking system
・Drawing management
system・Bridge Managementsystem etc.

BasicInformation

Integrated DB

Current RIMS Databases
Individual and Separate Databases

Restoration
Record Info.

DrawingInfo.

Inspection
Info.

Non-Integrated
DB

Next Generation RIMS Databases
Integration of multiple Databases
RIMS: Road Maintenance Information Management System

EAST NIPPON EXPRESSWAY COMPANY LIMITED
https://www.e-nexco.co.jp/en/Smart Maintenance Highway(SMH) Project(SMH) ‫ﻣﺸﺮوع اﻟﺼﯿﺎﻧﺔ اﻟﺬﻛﯿﺔ ﻟﻠﻄﺮق اﻟﺴﺮﻳﻌﺔ‬Development of user interface (next-generation RIMS)Management control indicator (KPI)

Portal tile

Asset information modeThis screen uses Power BI Desktop provided
by Microsoft Corporation.

Damage information
Bridge mode

Asset information

Discussion table

Pavement mode
List of bridge information

User-friendliness for Business Use

Operation of nextgeneration RIMS

Provides multi-scaled UI
corresponding to task level

Per Element
Drawing

Per IndividualBridge

Per Branch Office andRoute

Per Management
Office and Area

See detailed info.
By drilling down

Deterioration
Statistics

Plane view using
similarities ofmulti-media

Link with External
Data

Image of Open Data
Weather
Data

Earthquake/Ground Data

Traffic Census（TrafficFlow）『 Enhance collaboration amongengineers, instead of working
separately』

Etc.

EAST NIPPON EXPRESSWAY COMPANY LIMITED
https://www.e-nexco.co.jp/en/Measures against snow and ice‫ﺗﺪاﺑﯿﺮ ﻣﻀﺎدة ﻟﻠﺜﻠﺞ واﻟﺼﻘﯿﻊ‬Artificial intelligence-based decision-making assistance system
for snow and ice mitigation
This system assists decision-making by people who are involved in snow and ice mitigation efforts. The system employs an
artificial intelligence supported by cumulative knowledge from snow and ice mitigation experience in the past and also by
various pieces of real-time information including weather forecast, current weather, road surface condition and snow andice management readiness.

Climate data
気象予測

Snow and ice mitigation
work

Artificial intelligence(AI)

Big data
Traffic data

路面状況・交通状況

Antifreezing agent application

気象状況

Road surface
道路画像配信システム
condition data

Workinstructions

降雪量、気温等データ

Assistance system with AI and other supporting technologies
input

道路巡回の情報Work situation data
Work readiness
data

Related organizational
readiness data

[AI development process]

A systematized wisdom and knowledge based on theexpertise of best trained personnel• Cumulative snow and ice mitigation records and informationfrom various sources
Decision making about whether or not, when and how to
remove snow or to apply antifreezing agents•Work instructions from acontroller person at NMH(regional control center).

Gap

Snow remova

Work-related decisions
made by artificial
intelligence (AI)[Learn]Aim to achieve the decision-making
capability as close to that of anexperienced human controller as possible

Analyze the difference inthe decisions madeAnticipated effects:① Accumulation of wisdom and knowledge related to snow and ice mitigation efforts② Support for less-experienced control center personnel in making snow/ice mitigation effort decisions.
③ High-quality and consistent wintertime road surface management service④ Retention and transfer of the expertise possessed by best trained personnel

Ice and snow mitigation vehicle operation support by a quasi-zenithsatellite system• Development of snow blower operation assistance system supported by a quasi-zenith satellite system (with acentimeter-class positioning accuracy) for greater snow removal safety and efficiency• Work support and vehicle operation assistance in adverse conditions such as roadside snow piles covering roadfacilities or poor visibility (snowstorm).
Datum line
(As-C・RG)<<Quasi-zenith satellite system>>Michibiki

Datum line(outer line)
Center strip

Shoulder TravelinglaneGreater accuracy achieved through the combined use of
the system with GPS satellites that are orbiting directly
above Japan (10 meter class accuracy by GPS alone ⇒centimeter-class accuracy achieved)

Overtaking
lane

Snowblower• 24-hour 4-sattelite service capability established in October 2017
• Full service commenced in April 2018Quasizenith
準天頂衛星
satellite

Quasi-zenith satellite
receiver antenna

GPSＧＰsatellite
Ｓ衛星

Quasi-zenith satellite
receiverEAST NIPPON EXPRESSWAY COMPANY LIMITED
https://www.e-nexco.co.jp/en/Information
display system(image)Roadside snow
pile (roadfacilities suchas guardrails
and asphalt
curbs areburiedunderneath)[Vehicle location, distance from nearby
objects (asphalt curb etc.) and steering
wheel angle are displayed.]Measures against snow and ice‫ﺗﺪاﺑﯿﺮ ﻣﻀﺎدة ﻟﻠﺜﻠﺞ واﻟﺼﻘﯿﻊ‬Single-touch centralized control of snow/ice mitigation vehicle• The cabin of a snow/ice mitigation vehicle is usually cluttered with controls for various devices such as the plow (snowremover), the antifreezing agent applicator and the signaling device. To facilitate the simultaneous operation of thesedevices, a highly centralized single-touch control system has been developed.

Signaling device controller

Controls for antifreezing agent
applicator

Plow (snow remover) controller

Various operations and maneuvers
integrated into a number ofpatterned, streamlined sequences.

Single-touch
operations

Automatic Salting-control System using the Tire
Sensing a Road Surface Condition (ISCOS*)*ISCOS: Intelligent Salting Control Optimization System(1) Road Surface Condition Judgment System
Snow Patrol Vehicle

InternetIceCAIS®** Tire
(Contact Area Information Sensing)

CAIS Tire
Transmitter

Slip

Acceleration [G]DynamoAccelerometer
Dry

Slightly
wetWetSlush

Freshsnow(1) CAIS-equipped snow patrol vehicle makes a presalting
trip to grasp road surface conditions⇒ Web-based real-time database development

Compacted151050-5-10-15Vibration
increase

0.05 0.07 0.09 0.11
Time [sec]The salting rate every 100m is calculated based on thedatabase⇒ Loading only the necessary amount of salt through themeasurable hopper

Icy

snow

**”CAIS” is a registered trademark ofBridgestone Corporation(2) Automatic Salting Control System
Automatic salting
rate control device(2) Automatic salting rate control device on the spreader
communicates with the web-based database
Automatic salting in which salting rate changes every
100m depending on the vehicle location⇒ Appropriate salting amount to meet the road surface
condition
Approximately 10 % of salt was reduced in 2015-17
Internet

Touch panel type controller (new)Spraying theappropriate amounton the right position

CAIS-equipped
Snow patrol vehicle
CAIS Tire

Salting control console on a spreader (conventional)

EAST NIPPON EXPRESSWAY COMPANY LIMITED
https://www.e-nexco.co.jp/en/

Ageing Road Assets‫ﻣﺘﻘﺎدم‬

9,000
8,000

 At least 40% of the total bridge-length and 20% of total tunnel-length were also
constructed more than 30 years ago and they are facing increased risk by the aged
deterioration.
 The total vehicle weight is increasing with the increase in the number of large-scale
vehicle on the expressways. The expressways are under severe conditions such asincreasing in the usage of anti-freezing agent (NaCl) and the increase in the amountof extreme rainfall for a short time.

60

10～19 years
20～29 years
50

30～39 years

Total expressway Length(km) At least 40% of the total expressways-length has been operated for more than
30 years and because of this, the expressways are seriously deteriorated.

Less than 10years

7,000

40～49 years
More than 50 years

6,000

40

Average

5,000
30
4,000
20

3,000
2,000

101,00000

Elapsed years of the expressway transition

Concrete cracks and float

Severe environment in snow region

Concrete free lime

Damaged Condition

Average Service Period (years)

Current situation and problem of expressways

10,000Expressway Renewal Project‫اﻟﺘﺠﺪﻳﺪ‬Severe deterioration on slab lower surface

Large-scale renovation for bridges
e.g. Replacement of RC concrete slab with PC precast slab

Two-way traffic
regulation

Open to Traffic (1963)

Deteriorated Structure (2014)

Bridge renovation work

Undergoing Renewal Works (2019)

Renewed Segment (planed in 2026)

Expressway Inspection & Diagnosis‫اﻟﺘﻔﺘﯿﺶ واﻟﺘﺸﺨﯿﺺ‬BridgeRoad Surface
One of unique road surface inspection vhiecles, not only can measure rutting, cracking,and flatness (σ10ft, IRI) but also longitudinal and transverse pavement measurements
without making contact with the pavement.
It can smoothly and safely perform all 6 functions at 100km/h without impacting the flowof other traffic.

High-Speed Road Surface Measuring Vehicle (Road Tiger)

Tunnel Liner
Tunnel liner inspection vehicle:

High definition images taken by digital camera or video camera makes it possible toinspect the surface of a structure in the same way as the close visual inspection.
Through a computer analysis of the images, the clacks are automatically detected.

Infrared Camera System –Delaminations /spill inspection:
The infrared camera system takes images which isanalyzed automatically and displays the damagelevel in three stages. Because damages are
objectively analyzed by software, bias oroversight in measuring caused by skill difference
can be prevented. In addition, this system helps tocreate a research report since the detected results
are easily captured on spreadsheets or word
processing software. This system has gotten trackrecords in the U.S.

Infrared thermal image

Bridge inspection usingInfrared Camera System

It is now possible to obtain a clearer image at a speedof 100km/h by adopting the line sensor camera insteadof the conventional video camera. In addition, because
the photographing illumination using LED infrared
illumination is not visible to the naked eye, it no longer
influences on the passing vehicles on the opposite
direction. Moreover, this vehicle automatically identifies
the cracks by the captured image.

Inspection vehicle

Filming in a tunnel

Digital camera/video camera system - Crack inspection:

Crack analysis(minimum 0.2mmin width)

Bridge inspection using Digital
Camera System

Automatic crack-analysis by computer

Damage is detected bycomputer analysis

Video CameraSystemDisaster Management‫اﻟﻮﻗﺎﻳﺔ ﻣﻦ اﻟﻜﻮارث‬Use of rest areas as disaster-management bases

Disaster Prevention
Disaster caused by extreme
rainfall for a short time

 Ground anchor

 Slope Protection WorkNew type of anchor installation filling up
traditional anchor with inadequate
Existing conventional
anticorrosion function

Measures against land slideanchor

In the Great East Japan Earthquake, the Self-Defense Forces and firefighters heading to stricken areas used
expressway rest areas as relay and support bases. Based on this experience and various issues, authorities arebolstering their disaster-response capabilities across Japan to respond effectively and efficiently to emergencies,
using Moriya SA on the Joban Expressway as their model.
 Moriya Service Area (Southbound) on Joban Expressway, as a disaster management base

New type of anchor
addedEmergency vehicle
entrance/exit
Used by emergency
vehicles to enter and exit
outside of expressway intimes of disaster

Disaster-response warehouse
Inflatable tents for outdoor use,
emergency food and rations, relief
supplies, traffic regulation equipment
and other suppliers are store at thisDisaster-response warehouse

The recovery of the Tomei expressway in Makinohara area
Immediately after the Surugawan earthquake, NEXCO-Central started emergency checkup and stopgap recovery, and 4 days
later, finished temporary recovery for general traffic.

Aug. 11th 2009

Generators and rooftop
solar-power generation
facilities

Solar-power generation
panels on the roofs ofcommercial facilities

Heliport for mid-size
Helicopters
Nighttime illumination anda helicopter office havebeen installed, enablingsafe landing and take-off
day and nightGenerators enable
continuous use for
72 hours

Aug. 15th 2009 (4 days later)

Earthquake Museum for educational assistance on disaster prevention
Great Hanshin-Awaji Earthquake occurred in January 1995, took precious
lives and destroyed cherished livings of local communities. Earthquake
Museum conveys how Hanshin Expressway responded in the 623 days tocomplete the restoration of the expressway system. It displays damaged
structures and introduces new technologies and various activities which
put into practice based on the lessons including disaster management
support and educational assistance for disaster prevention.

Well
A well has been dug in caseof interruption of watersupplyThe food court is used as adisaster management office(1st Floor)
The food court layout can berearrange for use as a disastermanagement office, underdisaster situations- Electrical power outlets and TV
antenna terminals are installed- Large monitors and whiteboards
are installed

First-aid space (2ndFloor)
The employee break lounge
can be used as a first-aidroom.

General situation

Emergency situation

NEXCロ・.
Ez‑‑
2Japan'sExpresswaysarebuil
tandoperatedbysixcompanies.
Thetotallengthi
noperationi
s10，351km，and331kmi
sunderconstruction.
Sapporo

WEST

CompanyName:
WestNipponExpresswayCompanyL
imitedHeadO
ffice:Osaka
Expresswaysi
nOperation:3，533km

NEXCロ

T
raf
ficVolume:2.
95millionvehiclesjday

Er:
lS T

Tol
IRevenue:US$7.
1billion

CompanyName:
imitedEastNipponExpresswayCompanyL

Expresswayunderconstruction:72km~る

Hanshin
Expressway

CompanyName:
HanshinExpresswayCompanyL
imitedHeadO
ffice:Osaka
Expresswayi
nOperation:250.
4km

HeadO
ffice:Tokyo
Expresswayi
nOperation:3，943km

NEXCロ

T
rafficVolume:2.
95millionvehiclesjday

山 E5T

Tol
IRevenue:US$7.
82billion

Honshu‑Shikoku
BridgeExpressway

ExpresswayunderConstruction:75km

NEXCD
E日 5 T

TrafficVolume:0.
72millionvehiclesjday

量NEXCOCENTR日 L

Tol
IRevenue:US$1.7billionCompanyName:CentralNipponExpresswayCompanyL
imitedExpresswayunderConstruction:34.2km

日

Honshu‑Shikoku
BridgeExpressway

HeadOffice:Nagoya

FukuokaExpresswayi
nOperation:2，132km

shutokoCompanyName:
Honshu‑shikokuBridgeExpressw
ayCompanyL
imited.98millionvehiclesjdayTrafficVolume:1
Tol
IRevenue:US$6.
30billion
ExpresswayunderConstruction:132km

HeadOffice:Kobe
Expresswayi
nOperation:172.9km

shutoko

TrafficVolume:0.
12millionvehiclesjday

IRevenue:US$0.
6billionTol

NEXCD
CENTR日 L

CompanyName:
imitedMetropolit
anExpresswayCompanyL
HeadO
ffice:Tokyo
Expresswayi
nOperation:320.1km

Inoperation
.
.
.
.
.
.
.
・・園
田・ Underconstruction

Hanshin
Expressway

st，
Aso
fJULY120192019andcalculatedbytheexchanger
ateo
f110JPYfor1US$Note:Revenuei
sforyearendedMarch31，

TrafficVolume:1.02millionvehiclesjdayTol
IRevenue:US$2.
4billion
ExpresswayunderConstruction:17.5km