ROAD WEATHER AND WINTER MAINTENANCE

Transcription

1 Road Traffic Technology ROAD WEATHER AND WINTER MAINTENANCE METIS SSWM WMi ROAD WEATHER STATIONS ADVANCED ROAD WEATHER INFORMATION SYSTEM MAINTENANCE DECISION SUPPORT SYSTEM WINTER MAINTENANCE PERFORMANCE AND COST ANALYSIS

2 Road Weather WEATHER RADAR METIS WEATHER SATELLITE SSWM More effective winter maintenance A complete road weather information system from weather stations to the dispatcher prediction module helps to increase safety and at the same time to optimize maintenance costs thanks to the timely and effective treatment of roads in the winter. Safer roads OVERVIEW CAMERAS To maintain the usability of roads, it is essential to ensure timely and adequate treatment. Thanks to the predictions of the dispatcher module, maintenance is directed to specific locations to treat dangerous situations at the optimal time. This enables maintenance of an even larger area at an optimal condition. VMS MOBILE DATA ROAD WEATHER STATION CROSSMET A family of devices and systems for monitoring and predicting/nowcasting road weather. It is a full multi-level solution for intelligent winter road maintenance management. Cost saving Targeted winter maintenance, based on current on-line weather station info and a forecasting module, allows for the planning of winter maintenance. Efficient use of resources can then be achieved. CROSS developed an index which evaluates the performance of winter maintenance and its associated costs.

3 Road Weather Station Datalogger Overview camera Visual monitoring of road status Visual monitoring of actual weather Night vision as add-on Sunshine net radiation Control unit and datalogger Cabinet and power supply Wind measurement Wind speed Wind direction Atmospheric measurements Air temperature Dew point Relative humidity Precipitation and visibility Precipitation type Precipitation intensity and amount Visibility Control unit for road weather station an intelligent datalogger open platform for data processing and connecting a wide range of meteorological sensors. Control unit compatible with third-party sensors full technology independence Firmware upgrade locally or remotely Simple datalogger diagnostics via LED diodes Communication via GSM/GPRS, RS 232/485, TCP/IP, emergency special lines (SOS), Wi-Fi, radio or fiber optic Adaptation of device outputs for specific applications (e.g. variable message signs) Power supply options public lighting interrupted power supply, solar panels, wind turbine, or full cell independent power supply Supported sensors = an open platform measurement. Technology independent. Road Sensor Data transmission Air temperature, humidity, dew point Precipitation Visibility and present weather Road surface temperature Subsurface temperature Road status Freezing point Water layer thickness Salt concentration Friction Road condition sensor Wind speed and direction measurement Overview camera with night vision Software solutions CROSS software products create a comprehensive system for winter road maintenance: from dispatcher decision support to feedback and evaluation of the performance (efficiency) of winter maintenance. WMi SSWM Metis

4 Předpovědi ČHMÚ Satelity Metis Radary Meteorologické výstrahy Stations Cameras METIS is a unique software system for presenting road weather data and information focusing on the current and future situation on the roads. METIS provides a comprehensive overview of the weather in real time. Cameras Weather stations NWP model SSWM METIS The latest (fourth) generation of METIS brings many new features. Great emphasis is now placed on the status map, where a variety of meteorological data can be displayed to support the spatial weather perception. New additions are an info panel, and a realtime view of cloud cover and precipitation. Met Office forecasts Weather radars Meteoalarm warnings Vehicle tracking List of stations and their measured data Custom definition of favourite stations Data in tables, graphs, warnings Data history Forecast graphs General information type of station, location, altitude Real time camera images with history Real view of the road and current condition images, videos Custom definition of favourite cameras Hourly image previews Access to image history METIS core Status map Radar METIS mobile Cloud solution with web-based access Solution for data visualization Interactive presentation using maps, images, animations, tables, and graphs Open architecture and cooperation with third-party systems Map based presentation of weather station network (and their data) with zoom function Visualization in layers; layer on/off function Images from remote sensing View switching warnings, road condition, road temperature, air temperature, cameras Radar (precipitation) images Various satellite (cloud cover) images Interactive animations Unique forecast radar Weather prediction model Available on Android and ios Online data from road weather stations Overview of favourite stations Map display Navigation mode Modularity and language localization Designed also for tablets and smart phones Search function station, road, city Early Warning System User definable alerts via SMS and/or Alerts are sent if pre-defined values are exceeded or if hazardous situations appear in forecasts 6 7 Road Traffic Technology

5 SSWM Support System for Winter Maintenance Key features Integration of all relevant information sources Updated every hour Forecast for upcoming 12 (or 24) hours Road status prediction dry, wet, snow, drifting snow, frost, ice Direct INTEGRATION with system Metis Resolution for every 1 km of the road network Advanced maintenance decision support system Recommendation for maintenance treatment Graphic information based on maps SSWM key benefits Treatment recommendation for road maintenance operators Fast and easy implementation on a new road network To support the right decision To increase safety on roads To Cut The maintenance costs Use of existing road weather stations Field-proven, precise predictions Direct integration into METIS Support system for winter maintenance Local geodatabase Online package Thermal mapping Geographical information Expert information Traffic flow data Road construction Weather prediction model Weather stations Maintenance data Floating car data Traffic flow data

6 WMi Winter maintenance severity Winter Maintenance performance and cost analysis Winter severity vs. maintenance performance Maintenance Performances [km] scattering chemical materials snow removal inspection routes [h] snow removal by rotating plow snow removal by tractor plow Material consumption salt, grit [t] brine [l] GIS road data road length and width road category according to maintenance type Geographical information altitude topography land use Meteorological data road temperature air temperature dew point precipitation Use of road weather and professional climate stations Monitoring snowfall, drifting snow, temperatures, humidity (frost and ice) Standardized to cells of 500 x 500 m Considers geographical conditions (altitude, land use, etc.) Statistical analysis of their long-term relation Independent of location, climate, and extent of road network of different contractors Definition of standard performance for specific winter conditions Disclosure of deviations from the standard level of maintenance Performances recalculated to area (hectares) of maintained roads Statistics Reported and standard performance difference WMi WMi general WMi plowing WMi scattering Invoice invoiced performances unit prices invoiced price Invoice check financial controlling month by month Performance check week by week Formal invoice check Reporting check adequacy check Winter Performance Standard maintenance determined by large number of contractors in a country OVERREACTION Overpriced STANDARD MAINTENANCE UNDERREACTION Impact on traffic safety Road Traffic Technology Winter Maintenance Index

7 Data validation References Validation of meteorological data is crucial for the maintenance decision support system. Data quality and availability is essential for the immediate data interpretation by the dispatcher, and also for all related systems which use data from meteorological stations for further processing (e.g. variable speed regulation, forecast models). Wrong decisions can be made about winter maintenance because of invalid or missing data that can lead to unnecessary overpricing of maintenance or to neglection of maintenance with an obvious impact on traffic safety. Validation is necessary for two basic reasons Lezník Prevention of invalid data presentation to the end user. Detection of data invalidity should immediately trigger a notification to a service engineer. Advanced data validation is ensured routinely by CROSS Pearer software that allows the running of scheduled checks as well as on-demand checks. It also includes a sophisticated system of notifications to inform service support and supervising technology operation. Ostružná FAILURE: Unchanging value WARNING: Oscillation WARNING: Value context suspicious status Snow WARNING: False precipitation Brálová FAILURE: Exceeding limits WARNING: Station context nearby 3 6 station reports 92 % Check types Physical, sensory and meteorological limits Context between variables of a selected station Analysis of short-term and long-term trends Context between nearby stations Availability of equipment (data) and its settings D1 Ostrava Road Traffic Technology 12 13

8 Case study Road network monitoring in the Czech Republic Systematic installation of a road weather station network in the Czech Republic began in the mid nineties. Currently, the Czech road network is equipped with more than 500 units. 200 of those stations are either or Lite. Data from other manufacturers are integrated into the system and presented via METIS 4. The total number of stations is constantly growing. CROSS Road weather stations Regions with SSWM This network of meteorological stations currently monitors about 56,000 km of roads throughout the Czech Republic and in many cities such as the capital city of Prague. METIS 4 and related modules (SSWM, WMi) is used as the national manager of motorways and class 1 roads (Road and Motorway Directorate of the Czech Republic) and a number of other entities (cities and regional authorities) and private companies (e.g. technical services). Currently, the system is used by over 900 individual professional users. Prague Ostrava Brno Road Traffic Technology 14 15

9 CROSS Zlín Hasičská 397, Louky Zlín Czech Republic 03/2016