For high-voltage transmission cables and towers less than 150 meters high, medium intensity aviation obstruction lights emitting white light can be installed at the top. Regardless of the type of aviation obstacle light, the number and arrangement of aviation obstacle lights at different heights should be able to see the object or its "group outline" from all aspects, and consider the simultaneous and sequential flashing of obstacle marker lights to achieve a clear warning effect.

For chimneys or other similar buildings, the top obstacle marker light should be located between 1.5 and 3 meters above the top. Considering the pollution of the chimney on the lighting fixtures, the obstacle marker light can be located 4 to 6 meters below the chimney opening. Ultra high objects above 150 meters should be used in conjunction with medium and high intensity aviation obstruction lights.