Wave attack warning counter-measure! Wave attack warning system for TaiTung coastal road
The seaside section of Taiwan Route 9 in Taitung County has been vulnerable to typhoon waves in recent years, causing damage to people and vehicles. The Institute of Transportation, the Ministry of Transportation and Communications (hereinafter referred to as IOT) has completed the "Wave Attack Warning System for TaiTung Coastal Road", integrated the adjacent observation data and the marine forecast data of IOT to provide a 24-hour forecast wave attack information for the Third Maintenance Office of the Directorate General of Highways, which is for decision making support on closing the road when such waves attack.
The southern section of Taiwan Route 9 is the main route from Taitung to the west. Over the years, the Directorate General of Highways has repeatedly dispatched personnel to observe the situation of the road and implement early warning closures for the Nanxing and Duoliang sections, resulting in inconvenience to traffic. During typhoon Matmo in 2014, typhoon Soudelor in 2015, typhoons Meranti, Megi, and Nepartak in 2016, etc. the current road-restraining operations relied on whether or not the wave observation data met the warning value. These were based on the Taitung Buoy of the Water Resources Agency, MOEA and the personnel who visually read the wave meter in situ to decide on whether to close the road or not, which made it impossible to provide enough response time for the road users.
In cooperation with National Sun Yat-Sen University for a year, the IOT has researched and analyzed local marine conditions and typhoon events over the years, and has developed a technology that can predict the typhoon wave run-up database for the TaiTung Coastal Road. In response to the Duoliang and Nanxing sections of the Taiwan Route 9, which are vulnerable to wave damage, a model was developed for multi-variable situation analysis to establish a typhoon wave traceability database. The system interfaces existing wave information and tidal observation oceanographic information of the Taitung Buoy, Fugang Fishing Port and Dawu Fishing Port, and integrates the daily wave heights, tide level forecasts and wave run-up information provided by the Harbor Environment Information of IOT to complete the" Wave Attack Warning System for the TaiTung Coastal Road." The 24-hour forecast warning light of the road section is displayed on the webpage. The lights are divided into four levels: safe (green), early warning (yellow), warning (orange) and closed (red). This system allows the Directorate General of Highways and related units and front-line personnel to access information for closing the road which is more complete, convenient and predictable, through the computer or handheld device anytime, anywhere. It can improve the safety and convenience of road-users during typhoons and reduce the driving risks.