The bill is in memory of nine-year-old Ella Adoo-Kissi-Debrah who died after an asthma attack.
The Green Party says it will set out plans for a “game-changing” transformation in the UK.
After record local election gains, the Greens are aiming for four MPs in their "most ambitious" campaign.
Siân Berry's exit from the London Assembly means mayoral candidate Zoë Garbett will take her place.
The Green Party motion called for firm targets on reducing speed limits on London's streets.
The comedian wants to contest Brighton Pavilion, which is currently held by the Green Party.
Green Party members in England and Wales elect Carla Denyer and Adrian Ramsay as their new co-leaders.
Sian Berry says "inconsistency" on gender policy has put her in a "very difficult position".
Sian Berry, the Green Party candidate for London's mayor, plans to run things from "the bottom up".
