ATM Class 4900

ATM Class 4900
ATM Class 4900
Manufacturer	1st series: Fiat Ferroviaria; 2nd series: Stanga;
Constructed	1976–1978
Entered service	1976
Number built	100
Fleet numbers	1st series: 4900–4949; 2nd series: 4950–4999;
Capacity	60 (Seated); 210 (Standing);
Operator(s)	Azienda Trasporti Milanesi
Specifications
Train length	29.210 m (95 ft 10 in)
Width	2.380 m (7 ft 9 3⁄4 in)
Height	3.750 m (12 ft 3 3⁄4 in)
Floor height	942 mm (37 in)
Low-floor	No
Articulated sections	Three
Wheel diameter	690 mm (27 1⁄8 in)
Wheelbase	1.800 m (5 ft 10 3⁄4 in)
Maximum speed	60 km/h (37 mph)
Weight	1st series:; 31.8 tonnes (70,000 lb); 2nd series:; 31.6 tonnes (70,000 lb);
Traction motors	1st series:; TIBB GLM 1354 K (I serie); 2nd series:; AEG USG 6456r1;
Power output	1st series:; 290 kW (390 hp); 2nd series:; 296 kW (397 hp);
Electric system(s)	600 V DC, overhead line
Current collection method	Pantograph
UIC classification	Bo′ 2′ 2′ Bo′
Track gauge	1,445 mm (4 ft 8 7⁄8 in)

The ATM Class 4900 is a series of articulated trams used by the ATM on the Milan urban tramway network.

They were built from 1976 to 1978 in two series, by Fiat Ferroviaria and Stanga, respectively, and were intended to be used on the future light rail lines, like the proposed circular line that should substitute the existing circular trolleybus line.

However such lines were never built, and the 4900 were used on the existing network.

Bibliography

Carlo Marzorati: Le nuove elettromotrici ATM 4900. In: ″Italmodel Ferrovie″ Nr. 202 (March 1977), p. 156–160.
Giovanni Klaus Koenig: Il tram a pianale ribassato: storia e sviluppi. In: ″Ingegneria Ferroviaria″, May 1985, p. 223–241.
Giovanni Cornolò, Giuseppe Severi: Tram e tramvie a Milano 1840-1987., Azienda Trasporti Municipali, Milan 1987.

External links

Media related to ATM 4900 at Wikimedia Commons

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