New Delhi, Jan 16 (ANI): Bone chilling cold wave sweeping across north India with thick fog cover enveloping the region has made commuting a taxing task for office goers and passengers who have to make it on time to catch their flights or trains. Dense fog cover wrapping New Delhi again on Thursday caused trouble for the daily commuters due to poor visibility resulting in traffic bottlenecks on roads. Rail operations have again been hit with dozens of trains running behind schedule or have been cancelled. The auto drivers say that waiting for long hours for passengers on the road sides and dropping people braving harsh weather conditions is tough as state government has made no arrangements for them to keep warm during working hours.