The Baltimore Police Department added 10 new prisoner transport vans and retrofitted 13 others with a redesigned interior and camera system to improve treatment of detainees in custody.

The agency plans to have the 23 vans in service by the end of summer, reports the Baltimore Sun. The updated transport vans come into service more than a year after the death of Freddie Gray, who died in police custody after suffering spinal injuries in the back of a transport van.

The new Chevrolet Express vans will have four cameras inside the side compartment, rear compartment and outside the van looking at the rear loading area.