The city of Sydney has released a new ad campaign aimed at making the CBD safer for pedestrians.

The advertisements, to appear on six billboards in train stations from Monday, map the areas in the Sydney CBD where pedestrians have been injured or killed in collisions.

Busy: Pedestrians cross George Street. Credit:Dallas Kilponen

The ads highlights danger around train stations. Town Hall ranks as the most dangerous for pedestrians. About 140 accidents have occurred in a 300-metre radius around the station in the past five years.

But a four-way intersection where George and Pitt streets meet in Railway Square stands out as one of Sydney's most dangerous spots for accidents involving pedestrians.