Vaisala GUARDIAN Technical data
Vaisala Guardian Road Weather
Information System
www.vaisala.com
Guardian data is presented in a way
that aids decision-making.
What is Vaisala Guardian?
The Vaisala Guardian is a noninvasive Road Weather Information
System (RWIS) that reliably and
cost-effectively provides you with
the most accurate road surface
or pavement specic weather
information available.
The Guardian enables you to
remotely monitor road surface
conditions in real-time, with
precision. It also provides road
weather data that makes forecasting
far more accurate and reliable.
It is the clear choice
Featuring simple “do it yourself”
installation, ease of use and virtually
maintenance-free operation, it is the
clear choice for municipalities, cities
and towns. Guardian is a non-invasive
RWIS solution that is available at a
fraction of the total cost of an inpavement sensor system.
The advantages of a noninvasive system
Municipalities, counties and towns
are choosing Guardian for locations
that are challenging to site weather
stations with embedded sensors.
The Guardian employs state-of-theart sensors that are easily mounted
above or beside roadways.
More and accurate data
Employing state-of-the-art
technology and laser spectroscopy,
Guardian’s sensors measure a larger
surface area. Guardian accurately
measures the road surface state and
provides a variety of data; amount of
accumulated water, frost, ice, slush
and snow, real-time measurements
of grip, humidity, air and pavement
temperature. This enables you to
instantly assess the effectiveness of
winter maintenance efforts and the
level of traction and safety offered by
roadways and sidewalks.
Guardian provides you with
signicant lead time to take the
appropriate maintenance action
before road conditions deteriorate.
Ease of installation and
relocation
Guardian can be quickly and easily
attached to existing structures,
such as lampposts, signposts and
buildings. Once mounted, you just
hook up power, hit the switch and
start transmitting data.
Virtually maintenancefree operation
No need for maintenance contracts
and practically no risk of costly
downtimes. Guardian requires only
periodic cleaning of its sensor lenses
and it will automatically inform you
when the lenses are dirty.
Reliable support
Vaisala provides 24/7 helpdesk
support during winter to answer any
questions you might have.
Expandability
Guardian can be incorporated into
established weather station systems,
or can be used as a starting point to
develop a relatively low-cost, exible,
easy to install system.
Use Guardian’s traffic camera and you always have an eye on
the road when it matters most.
Provides signicant lead time before maintenance actions •
become necessary
Facilitates improved road safety and accident prevention •
(injury, damage to property and loss of life)
Eliminates guesswork and promotes the effective allocation •
of resources
Ready for immediate use (minimal training required)•
Quick “do it yourself” installation and relocation: easily •
attached to lighting poles, trafc signals or buildings
Virtually maintenance free•
Year-round applications•
Improves the accuracy of forecasting•
Risk mitigation (accurate data and historical records reduce •
exposure to litigation)
Convenient, centrally managed solution•
Financial Benefits
Promotes signicant annual savings in equipment •
maintenance, road treatment materials, labour and fuel
Cost effective: Reduced installation cost, due to no •
requirement for slot-cutting, limited civils works and
relatively low power consumption
Saves you the cost of purchasing and operating a server and •
managing data
System Features
Integral modem unit for wireless communication with •
server
Display in Vaisala visualisation software•
Vaisala Support
24/7 helpdesk support in winter months•
Data management, display and archiving responsibilities •
are managed by dedicated experts
You benet from decades of experience in RWIS and •
unsurpassed levels of reliability and expertise
Guardian benefits
Operational Benefits
Improved decision-making through real-time information•
Measures grip: an excellent metric to gauge the success of - •
and need for - winter maintenance actions
Environmental Benefits
Environmentally friendly: reduces use of fuel and anti-icing •
agents
Promotes reduced contamination of soils, vegetation, water, •
highway facilities and vehicles
Helps to minimize the corrosion of pavement, bridges and •
infrastructures caused by road salt
Information Benefits
Immediate access to meaningful real-time data that is easy •
to understand
Access highly accurate data 24/7 from any where with an •
Internet connection
Automated alerts by e-mail or SMS when detected •
conditions meet thresholds that you set
Data collection and data management all included for the •
same price
Option to access shared information with neighbouring •
authorities for an increased scope of information
Vaisala is the only company that manufactures all the sensors
and RPU electronics on its road weather stations
For more information, visit
www.vaisala.com or contact
us at sales@vaisala.com
Ref. B210838EN-B ©Vaisala 2010
This material is subject to copyright protection, with all
copyrights retained by Vaisala and its individual partners. All
rights reserved. Any logos and/or product names are trademarks
of Vaisala or its individual partners. The reproduction, transfer,
distribution or storage of information contained in this brochure
in any form without the prior written consent of Vaisala is strictly
prohibited. All specifications — technical included — are subject
to change without notice.
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