London's Transport Commissioner, Peter Hendy, says that the capital's road network really needs investment - as the recent problems with the Hammersmith Flyover demonstrate.
But Labour London Assembly member Val Shawcross argues that the capital's 10 year transport plan is going in "the wrong direction".
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The memorial will focus on remembering the 71 victims of the tower block fire.
A woman died as she crossed the road when she was struck by four separate motorists who police believe did not stop.
Patrols including local volunteers have been set up after the grisly finds in Thamesmead in the last month.