The Study Of Safety Fore-warning System Of Freeway Based On The Typhoon Weather

Typhoon is one of the great hidden troubles to traffic safety of the coastal freeway in summer. The area affected by the typhoon is extremely broad, and the impact of the areas is varied. Then cleared the purpose and significance of construction safety fore-warning system of freeway based on the typhoon weather. By analysised the former papers of some freeway ensuring system about the resistance to weather disasters both domestic and overseas, so as to inspired the thought of build safety fore-warning system of freeway based on the typhoon weather.First, from the microscopic, investigated the main climate factors of the typhoon weather which impact on traffic safety——rain factor and wind factor, analysised their effects of freeway traffic safety respectively, established"rain and wind - vehicle - freeway" interaction model on the target of no sideslip and calculated safe driving speed,then designed three speed limit levels and calculated corresponding safe driving distance; Secondly, from the macroscopic,built digital fore-warning program warehouse based on the typhoon weather, through analysised the existing freeway comprehensive program of severe weather warning, using the form of graphics and tables indicate each level schemes,which should be carried out by freeway management; Finally,in the light of the characteristics of freeway impact by typhoon weather, applied the techniques of Internet of Thing and Cloud Computing to build safety fore-warning system, cleared system structure, and proposed"smart things node"concept,and developed single-point Computing Server by Microsoft Visual FoxPro 9.0, then use this system to analysis and verified"rain and wind - vehicle - freeway" interaction model is reasonable.The objective of building safety fore-warning system of freeway based on the typhoon weather is positively preventm,timely handle and effectively minimize the various traffic accidents caused by typhoon weather. While ensuring freeway safety and improve freeway efficiency, minimized the interruption of freeway and protected the safety of road traveler; at the same time, improved the real-time monitoring, scientific management and decision-making capacity of freeway management, also reduced the intensity of freeway police. The establishment of this system has great social significance and economic significance. Key Words:freeway;typhoon weather;fore-warning system;Internet of Things;Cloud Computing...