Special Print, Vehicles, Weigh-In-Motion - Traffic Data Systems GmbH
Special Print, Vehicles, Weigh-In-Motion - Traffic Data Systems GmbH
Special Print, Vehicles, Weigh-In-Motion - Traffic Data Systems GmbH
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Fig. 2: WIM system with quartz sensors installed in the Monte Ceneri<br />
Tunnel<br />
3. System Characteristics<br />
• The WIM traffic data system consists of 32 quartz<br />
crystal WIM sensors (Lineas Type 9195C from<br />
Kistler) on 4 traffic lanes, and a data retriever<br />
(Marksman 660 from Golden River), including data<br />
transmission, software, and processor power supply<br />
• induction loops triggering infrared detectors for the<br />
height control system, in the South – North direction<br />
• video cameras including installation for permanent<br />
recording of traffic flow<br />
• stationary signals, partly with folding mechanism for<br />
adaptive signalisation<br />
• local control facilities<br />
STAMPANTE<br />
STAMPANTE<br />
North<br />
MONITOR<br />
VGA<br />
MONITOR<br />
VGA<br />
Fig. 3: Remote WIM system overview – Tunnel control center and static weighing<br />
Dakota<br />
Dakota<br />
Media<br />
Converter<br />
Media<br />
Converter<br />
HUB<br />
Media<br />
Converter<br />
The ”Monte Ceneri Tunnel” consists of two tunnel<br />
tubes with two (Northbound) and three (Southbound)<br />
lanes per tube, all equipped with the traffic control<br />
system.<br />
Improvements in traffic flow can be achieved among<br />
other means through harmonization of speeds on the<br />
individual traffic lanes of the motorway by<br />
• warning of overloaded vehicles, etc.<br />
• warning of traffic jams<br />
• traffic-adapted speed limit signalisation<br />
• avoidance of traffic obstructions<br />
The operational principle of the traffic control system<br />
can be described as follows:<br />
3.1 <strong>Data</strong> Acquisition<br />
<strong>Traffic</strong> flow data and environmental data (speeds,<br />
traffic volumes, precipitation, etc.) are acquired<br />
locally by the electronics installed in roadside stations,<br />
including<br />
• the individual axle loads and the gross vehicle<br />
weights of all vehicles<br />
• the distances between vehicles<br />
• traffic statistics per vehicle class, speed and time<br />
intervals<br />
Monte Ceneri Tunnel<br />
Lighting zone<br />
Lux = 104 min – Lux = 120 max<br />
WIM system<br />
M660<br />
High control<br />
HUB<br />
Media<br />
Converter<br />
South<br />
MONITOR<br />
VGA<br />
PC Switch<br />
WIM<br />
Power supply<br />
GAEM<br />
Dist. 230 Vac<br />
5
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