Indian Railways installed fog safety devices in train amid changing weather. The device will help in tackling foggy weather conditions during winter season. Visual test object placed at all railway stations to cope with dense fog layer. "Several departments in railways make arrangements due to fog. Visibility test object placed at railway stations. station masters declare fog conditions if the object isn’t available. Fog conditions are withdrawn after the object becomes visible. Signal location booklet has been given to the crew," said Ashutosh Gangal, GM, Northern Railway.