Tramway Avenue E15

My efforts to find out why this road was so called turned up the following:
This road was cut through from Stratford Broadway to West Ham Lane as part of the process of electrifying the tram lines between 1903-5. In 1937-40, trams were replaced by trolley buses which remained in use until 1960.
Found in British History On Line

I like the way the black has faded to red on this sign.