LUCKNOW, Dec. 19 -- The people should travel only when "absolutely necessary" and to strictly follow traffic rules, Uttar Pradesh relief commissioner Hrishikesh Bhaskar Yashod said on Thursday, as dense fog and cold wave conditions are likely to persist across the state for the next two to three days.

In a letter sent to all district magistrates, senior superintendents of police and superintendents of police, the relief commissioner directed officials to spread public awareness on road safety and preventive measures to protect people from fog and cold wave conditions. He instructed district authorities to coordinate with officials of UPDA, NHAI, UPSA, PWD and other related departments.

Yashod said weather warnings and forecasts received...