Outline :
Freeway Traffic Management System collects and processes traffic-related information to control traffic on the freeway. It uses an automatic inspection system installed to provide real-time traffic information to drivers and travelers.
Purpose :
- 1. To collect raw data on traffic conditions
- 2. To prevent and respond to accidents and emergencies
- 3. To provide traffic information
Information Coll ection :
This system collects information on current weather and road conditions through VDS (Vehicle Detection System), WIS(Weather Information System), and emergency phone services.
Information Processing :
This system saves, retrieves, and process the traffic data, other structure measurements, bridge maintenance data and other organizations such as the Korea Highway Corporation and Incheon International Airport Corporation.
Information Presentation :
This system provides information on expressway conditions in order to provide drivers with a convenient and comfortable ride. Such information will be presented by VMS, ARS/FAX, Internet, and emergency broadcasting system.
CCTV(Closed-Circuit TV)
By using the cameras installed on road, this system monitors and confirms vehicle accidents and any traffic jams caused by those accidents. All the information will be presented on the monitor at the Traffic Service Center.
Number of Installed Device
50sets
Main Function
- Overlook the traffic status
- Overlook the handling of accidents
- Provide images of the road through the Internet
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Situation Board
It delivers information on current traffic conditions to the operating center so that operators can get accurate information on the current situation.
Number of Installed Device
12 CCTV monitor(70")
Main Function
- Confirms traffic conditions
- Provides information on today's accidents and traffic volume
- Provides information on accidents
- Provides information on congested areas
- Provides information on road construction & events
- Provides information on weather conditions
- Provide images of the road through the Internet
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VMS(Variable Message Sign)
VMS (Variable Message Sign) will be installed at roadsides. They will provide information according to the current traffic conditions to the drivers and passengers.
Number of Installed Device
14
Main Function
- Provides information on traffic conditions
- Provides information on estimated travel times
- Provides information on accidents
- Provides information on vehicle breakdowns
- Provides information on congested areas
- Provides information on road construction
- Provides information on weather
- Provides information on events
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LCS(Lane Control System)
It provides general information on the upcoming traffic conditions so that drivers may prepare themselves accordingly. It also balances traffic volume.
Number of Installed Device
4
Main Function
- Distributes traffic volume between upper and lower deck of Yeongjong Bridge.
- Enhance safety conditions
- Efficiently control traffic
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ARS / FAX
This system informs traffic conditions on the expressway by telephone and fax.
Number of Installed Device
ARS 8 line / FAX 4
Main Function
- Provides phone message or faxes
- on traffic conditions
- on expected travel times
- on accident information
- on damaged vehicles
- on congested sections
- on construction information
- on weather information
- on current events
- on expressway utilities (Toll Plaza, toll-fee, the conditions of nearby roads, restricted vehicle data)
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Emergency Broadcasting
TAllows the management to broadcast emergency or evacuation notices. In case of an emergency, the system enables prompt evacuation of expressway via audio alerts.
Number of Installed Device
2
Main Function
- Broadcast evacuation notices during an emergency
- Release chime or siren to attract people's attention
- Broadcast BGM (Background Music)
- Cassette deck or radio broadcast. (for national defense training programs)
- Notice for the bridge supervisors.
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VDS(Vehicle Detection System)
Collects information on traffic volume, occupancy, traffic volume, and speed of vehicles on the expressway. Automatically detects traffic flow condition.
loop detector 62 / microwave detectors 18
2
Main Function
- Monitors traffic volume per lane (model: large/medium/small)
- Monitors occupancy per lane
- Monitors speed per lane
- Calculates the volume, speed and occupation of certain zone
- Alarm Tentative incidents
- Collects data every 10~60 seconds.
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WIS(Weather Information System)
Place weather sensor near the expressway to collect data on road conditions, and reacts to weather conditions. This prevents accidents due to inclement weather.
loop detector 62 / microwave detectors 18
4
Main Function
- Collects information on temperature and moisture.
- Collects information on weather forecast (snow, rain)
- Collects information of visibility of expressway.
- Collects information on the temperature of road surface
- Collects information on road surface condition
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ECS(Emergency Call System)
Emergency telephones are installed on the side of Yeongjong grand bridge, Banghwa grand bridge and Gaehwa tunnel. Customer can use these phones in only emergency situation such as traffic accidents, mechanical troubles in cars etc.
loop detector 62 / microwave detectors 18
26
Main Function
- Collects information on accidents and breakdowns
- Collects information on transportation and other obstacles
- Collects information on communications between expressway supervisors
- Collects information on expressway crime
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