The document discusses improvements to electric operated level crossing (EOLB) gate locking mechanisms. It describes issues with existing solenoid locking mechanisms such as frequent failures and gate close indications being disturbed. A proposed mechanical boom locking mechanism is then described which involves a rack and pinion lever to lock the booms after closure, preventing the signal from being lowered unless the key is extracted after proper closure. This new design aims to eliminate issues with existing solenoid locks and ensure positive boom locking.