Group 1 - The article highlights the impact of continuous cold wave weather on the Jingzhu North Expressway, where the minimum temperature in high-altitude areas has dropped to -2°C, leading to icy road conditions [1] - To ensure road safety, temporary traffic control measures were implemented starting from 19:00 on January 20, including exit diversion and entrance closures at specific stations [1] - Vehicles traveling in the affected areas are advised to take alternative routes, specifically the LeGuang North Expressway [1]

Group 1 - The article highlights the impact of a cold wave in the central and eastern regions of China, causing delays and cancellations of passenger trains on the Jingguang and Jinghu lines managed by the Beijing Railway Bureau [1] - The railway department advises travelers to check the China Railway 12306 website or station announcements for updates and to plan their trips accordingly [1] - Passengers who have purchased tickets for canceled trains can apply for refunds without incurring fees within 30 days from the date of travel, starting from the ticket's departure date [1]