Warwickshire Police officers took National Highways’ Operation Tramline supercab out on Warwickshire’s major routes to observe driver behaviour from an elevated position. Warwickshire Police officers took National Highways’ Operation Tramline supercab out on Warwickshire’s major routes to observe driver behaviour from an elevated position. POLICE caught out 66 motorists committing offences on Warwickshire’s major routes in just three days. Warwickshire Police officers took National Highways’ Operation Tramline supercab out on the A46, M40, M42, M6 and M69 to observe driver behaviours in cars, vans and lorries. They spotted nine speeding drivers, 25 drivers using their mobile phone behind the wheel, and 16 drivers or passengers not wearing a seatbelt.