Abstract: Safe passage of trains and other vehicles is made possible by railway crossings, making them an integral aspect of the transportation infrastructure. Unfortunately, there are still ...

Abstract: In this letter, we proposed an ultrasonic sensor-based resolution tunable displacement measurement system by using an extension spring. In the proposed method, a linear extension spring is ...

Alstom has been awarded a contract by construction company PORR to carry out works for the installation of new traffic control systems on line 354. The project aims to eliminate capacity bottlenecks ...

Forget robot wolves and missile-deflecting satellites — those things are already becoming old news. Instead, future wars just might revolve around insect-size spy robots. A recent digest of ...