The Twenty-eight by '28 initiative is an effort by former Mayor Eric Garcetti that the LA Metro complete 28 transit infrastructure projects before the start of the Games.[21][22] Most of these projects and initiatives were already in the planning stages during the bid, but will receive accelerated priority, while several minor new projects were programmed with the initiative. In August 2024, Mayor Karen Bass announced that LA plans the Olympics to be car-free, also termed '[public] transit-first' by organizers.[23][24] Promoting public transit as an alternative to driving is intended to reduce congestion and travel times. In addition to physical and organizational improvement of the city's own public transit infrastructure, Bass has suggested strategies such as encouraging remote work during the event.[25][26]
Infrastructure improvements are being funded by Measure R, a temporary half-cent sales tax increase, and Measure M, a continuation of Measure R's tax increase plus an additional permanent half-cent sales tax increase, both tax measures applicable to Los Angeles County.[27]