The dense fog is causing delays in train services, affecting thousands of passengers across northern India. Regions with single-line tracks are particularly vulnerable, as congestion builds up due to reduced visibility. Maintenance blocks further exacerbate the situation, leading to longer waiting times. The delays may disrupt travel plans, especially for those relying on trains for daily commutes or long-distance travel. Safety risks are heightened as visibility issues can lead to operational challenges for train drivers and railway staff.