Thousands of miles long tunnels support transportation of millions of vehicles around the world. Tunnels are crucial road infrastructure, especially in mountainous regions. They save a lot of time and fuel and provide reliable rail and road transportation in all seasons. Incessantly increasing vehicular congestion results in the construction of underground parking facilities. With ever-increasing urbanization, metro rail projects are becoming a necessity for sustainable urban transportation. Globally, metro rail tunnels constitute a large part of urban tunnels. However, enclosed underground infrastructure such as tunnels and parking lots exhibit a very different environment than an ambient one. Due to which, tunnels and parking lots frequently experience higher than normal pollution levels resulting in poor air quality. HOW UNDERGROUND INFRASTRUCTURE IS DIFFERENT THAN AMBIENT ONE The environment inside any enclosed underground infrastructure be it a tunnel or underground parking lot, is very different from an ambient environment. In an enclosed space, the free flow of fresh air is absent. As a result, the air inside them is almost stagnant. Air pollutants emitted due to vehicular activities are not diluted by fresh ambient air. As they have nowhere to escape, they accumulate in the tunnel or underground facilities over the period of time. Such accumulation of harmful air pollutants causes many problems, including health complications and increased road-accident hazards. THE CAUSE An environment with no exchange of indoor air with fresh air causes serious health issues. Exposure to pollution is unusually high in such a condition. Even if we are in our vehicles while passing through a tunnel, our exposure to pollutants is significantly high if tunnels are poorly ventilated. Such hazards are especially serious for parking lots because unlike tunnels, people spend a considerable amount of time outside their vehicles. However, exposure risk is disproportionately high to workers employed to work in parking lots and tunnels. Another very serious issue of poor ventilation of polluted air is road-traffic accidents. Sometimes during high vehicular traffic, pollutants trapped inside tunnels may also cause visibility issues. That increases accident hazards. Serious accidents might lead to hours of traffic jams and temporary tunnel closures resulting in a waste of time, fuel and other resources.

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AIR POLLUTION MONITORING IN
TUNNELS AND PARKING LOTS

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AIR POLLUTION MONITORING IN TUNNELS AND PARKING LOTS
Tunnels are crucial road infrastructure.
Thousands of miles long tunnels support
transportation of millions of vehicles around
the world.
They save a lot of time and fuel and provide
reliable rail and road transportation in all
seasons.
However, enclosed underground
infrastructure such as tunnels and parking lots
exhibit a very different environment than an
ambient one.
Due to which, tunnels and parking lots
frequently experience higher than normal
pollution levels.

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AIR POLLUTION MONITORING IN TUNNELS AND PARKING LOTS
HOW UNDERGROUND INFRASTRUCTURE IS
DIFFERENT THAN AMBIENT ONE
The free flow of fresh air is absent inside any
enclosed environment such as tunnel or
underground parking lot.
Air pollutants emitted from vehicular activities
are not diluted by fresh ambient air.
Such accumulation of harmful air pollutants
causes many problems, including health
complications and increased road-accident
hazards.

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AIR POLLUTION MONITORING IN TUNNELS AND PARKING LOTS
THE CAUSE
An environment where inside polluted air
is not exchanged with fresh air causes
serious health issues. Exposure to pollution
is unusually high in such a condition.
Another very serious issue of poor
ventilation of polluted air is road-traffic
accidents. Sometimes during high
vehicular traffic, pollutants trapped inside
tunnels may also cause visibility issues.
That increases accident hazards.

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AIR POLLUTION MONITORING IN TUNNELS AND PARKING LOTS
SOLUTION - AIR POLLUTION MONITORING
The fundamental reason for all these problems
mentioned above is the lack of ventilation in
enclosed and underground infrastructure.
If adequate and efficient ventilation is provided,
these problems can be easily solved.
But for these systems to work efficiently, we
must have a clear idea about the concentration
of air pollutants present in the tunnel or parking
lot.
A clear understanding of the presence of air
pollutants, its extent, concentration and trend
helps in fine tuning and optimizing our
ventilation systems.

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AIR POLLUTION MONITORING IN TUNNELS AND PARKING LOTS
NEED OF AIR POLLUTION MONITORING IN
TUNNELS AND PARKING LOTS
With the help of this pollution data , the
ventilation system can be fine-tuned so that
adequate ventilation can be maintained all the
time.
By integrating real-time air quality monitoring
data with ventilation systems, high ventilation
efficiency can be achieved.
This ensures that enclosed spaces such as
tunnels and parking lots are adequately
ventilated all the time, even during high
vehicular traffic.

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AIR POLLUTION MONITORING IN TUNNELS AND PARKING LOTS
BENEFITS OF AIR POLLUTION MONITORING
IN TUNNELS AND PARKING LOTS
BETTER VENTILATION MANAGEMENT
REDUCED AIR POLLUTION EXPOSURE
INCREASED SAFETY
COST AND TIME SAVINGS

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AIR POLLUTION MONITORING IN TUNNELS AND PARKING LOTS
READ OIZOM’S WHITEPAPER ON LOCATION
SELECTION TO UNDERSTAND MORE ABOUT
HOW TO CARRY OUT AIR POLLUTION
MONITORING IN TUNNELS AND PARKING
LOTS