导读：9月9日，地铁工作人员喜悦洋溢地迎接试乘人员。本报记者邓放摄

9月9日，随着最后一方混凝土浇筑完毕，郑州地铁6号线贾湿区间高架段顺利完成合龙。郑州地铁6号线线路起于荥阳市贾峪镇站，止于郑东新区小营站，全长39.13公里。王威摄

□本报记者宋敏

连续两天，郑州两条地铁线建设迎来关键节点。继9月8日3号线一期工程试运行后，9月9日上午，4号线也进入为期3个月的试运行阶段。一年底，这两条线路都将面向社会初期运营。

“科技蓝”与“盛世桔”年底均将启程

每条地铁线都有其独特的主色调，其中3号線以“盛世桔”为主题，而4号線则以“科技蓝”作为标志色。记者探访试运行现场，看到了从车身花纹到车厢内饰、车站装修等多方面的设计元素，都通过色彩、构成和艺术点缀等方式，以主题色为特色的打造。

以4号線為例，其車外觀主要以藍色為主調，並融入了青铜鼎纹样元素，以此呼应商都历史文化。而在車站設計中，不同文化元素被巧妙融入至站厅和文化墙之中，如省体育中心站突出“活力郑州”，融入太极文化；金融岛北站突出“经济郑州”，呈现飞鸟造型；会展中心站突出“人文郑州”，充分融入汉字文化。

每條地下鐵線，每個特色鮮明、氛圍濃厚的地鐵車站在城市展示著城市的文化與風采，它們成為了最亮麗的城市會客廳。

Zhengzhou Metro Line 4 begins at the old hen Chen station in Huaiji District and ends at the River West Road station in Guancheng District, connecting the northern and southern areas of the city. The line stretches along three routes: Sanyuan Road, National Highway, Longhu Middle Circle Road, Yiyidong Road, Zhongzhaodao, Tengfei Road, and Jinbai Road. With a total length of 29.217 kilometers and 27 stations including ten transfer stations.

Currently, all main structures of both lines have been completed with tracks laid down; construction work on ancillary facilities has reached 92% while installation and decoration work for electrical systems has achieved 90%. By October end this year, tests for initial operation will be completed for all required electric passenger trains.

Apart from Lines No. 3 (Phase I) and No. 4 which are already under trial run or set to start operating by December this year as part of their initial phase operations planed before next year's end – an array of projects outlined in Zhengzhou's third rail transit development plan covering years between20192024have kicked off simultaneously.

From when Zhengzhou entered its metro era back in2013to2020when “米字+环形” rail transport network’s operational plus under-construction mileage surpassed300kilometers,”Zhengzhou on Rails" is gradually turning into reality.

The metro system continues to progress with time while improving quality service standards through new technologies such as visual passenger guidance systems inside carriages; smart service robots combined with fish-eye cameras enhancing equipment reliability & operation efficiency; energy-saving measures implemented within control mechanisms – enriching overall travel experience further still after Line No. 3 Phase I was put into use where passengers waiting at stations could monitor real-time distribution patterns across train cars via screens installed on doors' shields as well as baby care rooms equipped with warm milk dispensers tailored towards human comfort needs that bring us closer to realizing a networkized transportation era for our metropolitan area where Lines Nos1-2-5 currently serve central urban districts supporting connectivity between residential zones industrial parks high-tech innovation hubs etc promoting regional economic growth by strengthening connections among cities within Central Plains region fostering harmonious coexistence amongst different urban spaces easing traffic congestion heightening public transportation services levels contributing significantly to better urban planning strategies social stability & sustainable development goals worldwide."