The development of the traffic lights

Records, the KMT rule, the city of shenyang has 50 traffic command post, there is no traffic lights for a certain proportion, then repair, increased traffic lights (19th place Automatic lights 4, manual command lamp 15) , no lamp box 15. To ShangShi

 records, the KMT rule, the city of shenyang has 50 traffic command post, there is no traffic lights for a certain proportion, then repair, increased traffic lights (19th place Automatic lights 4, manual command lamp 15) , no lamp box 15. By the early 1960 s, the city's light duty has reached 30, in the early 90 s, shenyang complete one loop traffic signal automatic control system and closed circuit television monitoring system' Closed-circuit television monitoring system ( English: Closed - Circuit Television, or CCTV, for short) Safety guard system is an important part of, is an advanced, preventive ability strong comprehensive system. 】 The construction, speed up the process of the intelligent transportation. The traffic light at the shenyang development, perfect, refraction evolutionary history of traffic lights. In the 18th century originated in England' England ( English: England) , the English, is the main part of the United Kingdom of Great Britain and Northern Ireland, so used to England on term also refers to the UK. 】 The central region' In central China, the east coastal and west inland, from north to south, from east to west by including shanxi, henan, anhui, hubei, jiangxi, hunan six adjacent provinces, by the end of 2017, the central region land area of about 102. About 3 8 square kilometers, the population of permanent residents. About 17, 6. 8 billion, gross domestic product. About 4 94 trillion yuan, per capita GDP. 870000 yuan. 】 The industrial revolution' The industrial revolution, 工业革命) Began in the 16th century or earlier, the second half of the eighteenth century, the progress in the UK has been very significant. 】 , affecting the whole Europe [ Europa chau ( 欧洲) Name from the Greek mythology characters 'Europa' ( Greek: Ε nu rho damage PI eta ς) , located in the northwest of eastern hemisphere, the arctic ocean in the north, west Atlantic, the south shore of the Atlantic belonging to the Mediterranean Sea and the black sea. 】 Mainland China, and led to many of the country after the industrial revolution. From the aspects of production technology, the machine factory replaced the manual workshop, the industrial revolution to create huge productivity, mankind into the era of steam, the British' Britain, the full name of United Kingdom of Great Britain and Northern Ireland ( 大不列颠及北爱尔兰联合王国) The British Isles, native is located in the northwest of continental Europe, by the north sea, UK - yingguo】 Becoming a 'world factory' In the economics literature, to the factory of the world has not the exact definition, as experts in industrial economy, explain the meaning of the world's factory for the and analysis ─ ─ ─ the factory of the world, in a nutshell, is to offer the world market on a large scale industrial production base. 】