The Civil Aviation Administration (CAA) of China has announced plans to improve the on time performance of airlines across the country. Air traffic controllers have been instructed to ensure that planes take off within 30 minutes of cabin doors closing. They are also to prioritise take-off for flights delayed by two hours or more, when before on time flights were given right of way. According to the China Daily, the policies came in response to the frequent flight delays that have been caused by thunderstorms this summer, raising the ire of many passengers. However, these new policies will not apply during times of bad weather. Instead, when such circumstances do cause severe delays, the tower will be able to temporarily reroute aircraft thorough military airspace. Yet airlines are sceptical these policies will help the CAA meet its target because traffic at big airports is heavy and departure times are hard to predict.