A variable- message sign or message board, often abbreviated VMS, VMB, CMS, or DMS, and in the UK known as a matrix sign, is an electronic traffic sign often used on roadways to give travelers informa
LED matrix sign over I-94 in Saint Paul, Minnesota, advising of a road blockage during a winter storm
Early style of VMS on the New Jersey Turnpike using neon tubes, since replaced by new LED VMS signs. It is next to a vane variable speed-limit sign
Europe's largest Dynamic Route Guidance System Nuremberg, Germany
LED sign over I-90 (Jane Addams Memorial Tollway) in Riley Township, Illinois, showing remaining travel times
On 7 July 2005, Islamist terrorists carried out four coordinated suicide bombings targeting commuters travelling on London's public transport during the morning rush hour. The attacks are sometimes kn
Variable-message sign
…Katunayake Expressway in Colombo, Sri Lanka A three row fixed character matrix LED sign warns "Avoid London - Area Closed - Turn On Radio" following the 7 July 2005 London bombings Europe's largest Dynamic Route Guidance System, in Nuremberg, Germany (hybrid rotating prism and row matrix LED) A dual row matrix LED sign on National…
Russell square ambulances
Passengers awaiting evacuation from a bombed train between King's Cross and Russell Square
The bombers captured on CCTV at Luton station at 7:21 a.m. on 7 July 2005 (l-r): Hasib Hussain, Germaine Lindsay, Mohammad Sidique Khan, Shehzad Tanweer
Hasib Hussain, the bus bomber in Tavistock Square, captured on CCTV leaving a Boots store on the King's Cross station concourse at 9:00 a.m. on 7 July 2005