News & Announcements Rock Region METRO launches its first five zero-emission mass transit buses today, the first in The Natural State. The 40-foot Proterra ZX5 Max vehicles will be placed in service on area streets in July following additional staff training. The buses were primarily funded by a 2021 $4.9 million “Shock the Rock” FTA 5339 Bus and Bus Facilities competitive grant, the agency’s largest competitive grant award to date, to purchase the buses and their related charging infrastructure.Read more