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Runway edge lights are used to outline the edges of runways during periods of darkness or restricted visibility conditions. These light systems are classified according to the intensity they are capable of producing: * High intensity runway lights (HIRL) * Medium intensity runway lights (MIRL) * Low intensity runway lights (LIRL) The HIRL and MIRL systems have variable intensity controls, whereas the LIRLs normally have one intensity setting. Runway edge lights are white, except on instrument runways where yellow replaces white on the last or half the runway length (whichever is less), to form a caution zone for landings.〔(【引用サイトリンク】 Aerodrome Design and Operations ) §5.3.9, "Runway edge lights"〕 The lights marking the ends of the runway emit red light toward the runway to indicate the end of runway to departing or arriving aircraft and emit green outward from the runway end to indicate the threshold to landing aircraft. ==See also== * Approach lighting system * Pilot-controlled lighting * Precision approach path indicator * Runway end identifier lights * Visual approach slope indicator 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Runway edge lights」の詳細全文を読む スポンサード リンク
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