Method for calculating driving fault-tolerance capability of expressway traffic management facilities based on information entropy

The invention discloses a method for calculating driving fault-tolerance capability of expressway traffic management facilities based on information entropy. The method comprises the following steps of 1, calculating basic driving fault-tolerance capability of the expressway traffic management facilities; 2, calculating an expressway driving fault-tolerance factor alpha; 3, calculating the amount of effective information transferred by the expressway traffic management facilities; 4, calculating actual driving fault-tolerance capability of the expressway traffic management facilities; 5, evaluating driving fault-tolerance capability level of expressway traffic management facilities. The method is simple, results are visible and reliable, complexity of the exiting method for calculating and evaluating the traffic facilities is avoided, road planners and designers can optimize design of traffic sign marking, isolation and anti-dazzle facilities according to the fault-tolerance capability and level, road maintainers improve the traffic facilities according to the fault-tolerance capability and level, and casualties, economic loss and environmental pollution are reduced.