High light strong aviation obstruction lights, medium light aviation obstruction lights and low light aviation obstruction lights belong to the aviation obstruction lights, according to the installation height of the division. High light strong aviation obstruction light is more than 150 meters above the ground height of the obstacles used. And require the A-type and B-type high light intensity obstruction lights must be white flash, located in an object on all A-type high light barrier lights must also flash, and marked overhead lines or cables to support the existence of the tower B-type high light barrier lights should be sequential Flash: first is the middle light, then the top light, and finally the bottom of the light. The medium light aerial obstruction light is a barrier that is highly obstructed at a height of 45 m to 105 m above the ground building. Points are A type, B type, C type three kinds. A type of light intensity obstruction light must be a white flash, B type must be a red flash, C type must be a red constant light. In the same object on the A-and B-type light intensity obstruction lights must also flash. The low light aerial obstruction light is an obstacle with an obstruction that is less than 45 meters below the height. There are two types of A and B. Type A, Type B and Type C low-light aeronautical obstruction lights must be red constant luminaires when fixed on objects, and C-type low light obstructions on emergency and security vehicles must be blue , While the C-type low-light obstruction light displayed on other vehicles must emit a yellow flash. High light strong aviation obstruction lights, medium light aviation obstruction lights and low light aviation obstruction lights belong to the aviation obstruction lights, according to the installation height of the division.