Join Mike Woof, editor of World Highways, as he delves into three contentious tunnel projects in the UK - the Stonehenge Bypass, the Silvertown Tunnel, and the Lower Thames Crossing. These projects aim to alleviate the long-standing traffic delays at the A303, Blackwall Tunnel, and Dartford Crossing. However, the pursuit of smoother traffic flow comes with environmental apprehensions, with fears of localized air pollution from vehicle exhausts.Join Mike Woof, editor of World Highways, as he delves into three contentious tunnel projects in the UK - the Stonehenge Bypass, the Silvertown Tunnel, and the Lower Thames Crossing. These projects aim to alleviate the long-standing traffic delays at the A303, Blackwall Tunnel, and Dartford Crossing. However, the pursuit of smoother traffic flow comes with environmental apprehensions, with fears of localised air pollution from vehicle exhausts.