Clean Public Transport Fleet in Rome: Electric Buses - Italy


With the support of Miracles 10 new 5 met. electric buses have been purchased and the electric bus network has been extended with 2 new lines. It is planned to enlarge the fleet with 36 new medium-sized (9 met.) buses, to be operated on two new lines, with a total length of 14 km.

Objectives/ Innovative aspects

Based upon the experience gained with electric buses during the past 15 years, the specific objective of the measure is to increase the number of electric buses circulating within the inner city centre and to purchase new electric buses with higher transport capacity, in order to serve a larger area.

The measure forms part of a wider Municipality project, which aims to achieve a “zero emission area” in the city centre.


The measures

Since 1989 three bus lines, operating with electric mini buses, have successfully been in service inside the inner city centre Limited Traffic Zone (LTZ). The LTZ covers a surface of 5.2 km2 compared to the 1,300 km2 of the whole Municipality. This area, which covers the main cultural heritage of Rome, is at the core of the Municipality policy to reduce traffic pollution.
With the support of MIRACLES, 10 new buses have been purchased and the electric bus network has been extended with 2 new lines. It is planned to enlarge the fleet with 36 new buses.

Implementation status

ATAC, the PT Agency in Rome, has so far purchased 10 new electric mini buses with the features detailed below, which have been added to the 42 already in service. The plan to buy 36 more medium sized e-buses (8-9 meters length) is still on going.

Description of the e-bus fleet since 2002:
* 42 electric buses purchased until 1996
* 10 electric buses purchased in 2002

Service operated with e-buses since 2002:
* number of lines: 5
* total network length = 20.2 Km
* vehicle-Km/year produced: 1,200,000

Characteristics of the 10 new minibuses:
* Length: 5.1m
* Width: 2.3 m
* Passenger capacity: 27+1
* Engine: c.c-24.5 Kw
* Batteries: Pb acid – 585 Ah
* Autonomy: 45 Km

The service is operated taking into consideration the process of battery replacement.

(Expected) results

The objective of the measure is to continue to enlarge the electric bus fleet through the purchase of 36 new “medium sized” buses, to be operated on two new lines, with a total length of 14 km. It is planned that they will produce 700,000 vehicle-Km/year. The aim is to improve the performance of the buses in terms of increased vehicle capacity and increased battery performance, as detailed below.

1) Battery requirements:
Replacement of Pb-Acid batteries with the new Metal-Hybrid pack.

First tests carried out in 2002 have shown that:
* the range of use has doubled;
* a complete refit of traction and battery management equipment is necessary.

2) Vehicle requirements:
* Length: up to 9.0 m
* Width: up to 2.3 m
* Capacity: 36 passengers minimum
* Range of use: best fit up to 190 Km/day with intermediate battery recharging admitted.

Contact

Mannini Federico
f e d e r i c o . m a n n i n i @ a t a c . r o m a . i t


The above project is part of the CIVITAS - MIRACLES initiative.
CIVITAS - MIRACLES is a project that assembles four major European cities: Rome (Italy), Barcelona (Spain), Winchester (United Kingdom) and Cork (Ireland). The Miracles project answer the call of the European Commission for increasing the urban transport system's sustainability and efficiency through radical strategies for Clean Urban Transport.

Web site: http://www.civitas-initiative.org/