Officials moving to curb ‘absolutely unacceptable’ violence on L.A. Metro buses and railways

Facial-recognition technology. Weapon-detection systems like at sporting events and airports. More cops.

Barriers at stations. Suspending or banning offenders from buses and trains. Plastic glass to partition off bus drivers.

These are all under consideration by transportation officials, or been approved, in an attempt to curb a recent wave of headline-grabbing violence along the county’s public-transit system.

In the interim, officials have ramped up the presence of both...