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Expressways in China were limited to 120 km/h (75 mph) since the PRC's first road-related law, the Road Traffic Safety Law of the People's Republic of China, came into effect on May 1, 2004. Semi-expressways and city express routes (called ''kuàisù gōnglù'' () in Chinese, meaning "high speed public road") generally have lower speed limits of 100 km/h (62 mph): in some cases the speed limit may be lower. On China National Highways (which are ''not'' expressways), a common speed limit is 80 km/h (50 mph). In some localities, speed limits may drop to 40 km/h (25 mph). On some designated "fast through routes" in cities, speed limits are up to 80 km/h (50 mph). Otherwise, speed limits are 70 km/h (43 mph) on roads with two uninterrupted yellow lines and 60 km/h (37 mph) or 50 km/h (31 mph) otherwise. Signage in towns and on expressways is often present. Minimum speed limits on expressways vary. A general minimum speed limit of 60 km/h (37 mph) is in force at all times (although traffic jams thwart it). ==References== 〔 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「Speed limits in China」の詳細全文を読む スポンサード リンク
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