Holding two sacks and a shovel, traffic police officers Cao Chun and Wu Yulei helped more than 50 cars trapped on a bridge in Wuhan, Hubei province, survive a sweeping blizzard on Saturday night.

They pushed cars for over three hours in the freezing weather, sometimes choking on the exhaust fumes or falling down on the slippery road, but thanks to their efforts, the traffic returned to normal on the bridge by early Sunday morning.

Like Cao and Wu, all traffic police officers in Wuhan have been on duty amid freezing rain and snow. More than 900 patrolling units and 54 police stations have helped maintain traffic movement on major roads and bridges, train services at railway stations and flights at Wuhan Tianhe International Airport, as part of the city government's comprehensive measures to ensure people's safety amid the holiday travel rush.

Freezing rain and snow have battered the city, as well as China's vast central and eastern regions, including Henan, Hunan and Jiangxi provinces, since Thursday. The harsh weather is expected to last for days, according to the National Meteorological Center, which on Sunday issued another orange alert for blizzard.

Orange is the second-highest level of alert in the country's four-tier, color-coded weather warning system.

The inclement weather has coincided with the 40-day Spring Festival travel rush, which started on Jan 26, posing serious challenges for both travelers and service providers.

To brace for the harsh weather and potential disasters during the holiday, the general offices of the Communist Party of China Central Committee and the State Council issued a notice on Thursday, urging authorities nationwide to ensure safe and smooth transportation services.

Transportation regulators and service providers, on their part, have adopted a slew of measures to ensure emergency response and guarantee the safety of travelers.

China State Railway Group, the national railway operator, has made efforts to mitigate safety risks by suspending operations or reducing train speeds in several regions, including Hunan, Hubei and Guangdong provinces and Shanghai, the company said on Saturday.

Passengers affected by the suspension of train services are eligible to apply for full refunds of tickets, with additional counters opened at railway stations to facilitate the refunds and also process any requests for change in travel dates.

Meanwhile, inspections of key routes, bridges, tunnels and other critical infrastructure are being conducted by railway departments.

Continuous monitoring of track switches, overhead lines and electric multiple units are also being carried out to ensure good condition of railway equipment and facilities.

Additional staff and equipment have been deployed for snow removal and de-icing operations. Backup diesel locomotives and rescue staff have been deployed at major railway lines and hubs to deal with potential emergencies.