Armstrong Williams takes on the news of the week and asks the questions you want answered. Don’t miss our weekly town hall by Tom Roussey WASHINGTON (7News) — Over ten days ending Monday, Metro ...

The train derailment in eastern India that killed more than 300 people and injured hundreds more was caused by an error in the electronic signaling system that led a ...

The derailment in eastern India that killed more than 300 people and injured hundreds was caused by an error in the electronic signaling system that led a train to ...

BALASORE, India (AP) — The derailment in eastern India that killed 275 people and injured hundreds was caused by an error in the electronic signaling system that ...

WASHINGTON (7News) — As Metro prepares to ask local leaders for an increase in funding this week, leaders of the transit agency gave 7News a behind-the-scenes look at one of the major things they say ...

BALASORE, India (AP) — The derailment in eastern India that killed 275 people and injured hundreds was caused by an error in the electronic signaling system that ...

An electronic signaling system error led to the train derailment in India that killed nearly 300 people and injured hundreds more, officials said Sunday. The error ...

Siemens Mobility conducted the first live demonstration of its new Signalling X CBTC (communications-based train control) system for metros (rspid transit) at Singapore’s new Rail Test Centre on Nov.

PSTN signaling – including call setup, management and teardown – is controlled by the common channel Signaling System 7 (SS7). The standards allow for several variants that are deployed across the ...