Just like road and air travel, wintry weather can pose challenges for the rail network – and potential dangers to passengers. Its effects range from speed restrictions on exposed routes, to the suspension of train services due to avalanches.
High winds can blow objects on to the line and heavy rain can cause flooding and landslips, which means trains must stop until the line is cleared, and a thorough safety inspection of the track is carried out.
Low temperatures can also cause points, movable sections of track that trains to move from one line to another, to freeze up, preventing trains from accessing certain routes or platforms.
To help keep passengers moving, the rail network operates a special winter fleet – complete with snow ploughs, hot air blowers, steam jets, brushes, scrapers and anti-freeze – to clear snow and ice from the tracks and has fitted over 100km of special heating strips to prevent ice building up on conductor rails which power trains in the south and south east of England.
The rail industry’s winter preparation programme includes a number of measures:
• 10 snow and ice treatment trains (SITTs) fitted with snow ploughs, hot air blowers, steam jets, brushes, scrapers and jets for heated anti-freeze and compressed air to quickly de-ice tracks
• 13 pairs of snow ploughs that fit to locomotives to clear deep snow from the tracks and a number of small snow ploughs.
• The rail industry have attached heaters and NASA-grade insulation to points to prevent ice forming and added protective covers to 4,000 points and 2,500 points motors to keep snow out and prevent damage by ice falling from trains
• Thousands of workers patrol the tracks day and night clearing snow and ice from junctions and tunnels
• The network’s remote temperature monitoring and a helicopter fitted with thermal imaging cameras identify points heaters that are not working effectively
• Anti-icing fluid and heating strips are used on live conductor rails to prevent ice building up and preventing trains from drawing power; the addition of heating strips has reduced ice-related incidents by up to 80%
• Train companies run empty trains through the night to help keep tracks clear, and passenger trains can be fitted with snow ploughs which can clear up to eight inches of snow – if it's deeper, the network send in their fleet of dedicated snow ploughs
• Major routes that are the most at risk have been fitted with fences that prevent snow blowing on to the tracks
• The rail industry use ballast – the stones beneath the track – treated with anti-icing fluid for the winter engineering work, as this stops it freezing together in the delivery wagons and helps to continue working in all temperatures