Older trolleybus fleet, not anymore in use, was consisted of : ROCAR 312E ,Renault Berliet ER100 (former Saint Etienne), FBW 91U ( former Geneva), and Neoplan N6121 ( Former Lausanne).

Except a few Neoplan N6121 in conservation, and one ROCAR 312E kept as maintenance vehicle for wire greasing, no old trolleybuses are in operation.

There were about 8 tram lines initially, but due to the decline of the industry, the network was reduced to just 2 routes, 101 and 102, which are the most busy.

However due to the fact that it is singular in Ploiesti, difficult maintenance, lack of spare parts and being to heavy it was decided to decommission it.

In April 2024, according to the new tender won, 22 SOR EBN 9.5 will be delivered in 2025, rising the number of electric buses to a total of 31.