City and County agencies can utilize the TPI to reduce vehicle traffic near locations where populations that are highly sensitive to air pollution live and work, such as schools and parks.

The community could provide more support to the Los Angeles County Metropolitan Transportation Authority (MTA) to increase the number of electric buses and reduce the use of CNG. Improving public transportation service on corridors with High TPI could reduce single-occupancy vehicle trips. Public electric vehicle charging infrastructure should be equitably distributed for those who are unable to use public transit.

Another way to reduce car dependency is to support active transportation choices by working with the city and alternative transportation coalitions to provide training and to construct safe cycling lanes along streets with lower pollution levels and adjacent to those where gasoline-powered vehicles seem to travel most frequently.

In addition, traffic signals can be optimized to reduce idling at stop lights. Idling of all vehicles (trucks, buses, cars, etc.) outside of schools, childcare centers, parks, healthcare facilities, and other sensitive receptor locations should be minimized or eliminated through local law.

Green corridors and physical barriers can be effective in containing or mitigating pollutants along major roadways. The Traffic Pollution Indicator can help identify sections of roads and highways that could benefit most from these infrastructure improvements, which can be very costly. Areas like the East LA interchange and sections of the I-10 freeway and commuter rail tracks near Ramona Gardens could be good candidates for priority interventions. The City and County would need to work with CalTrans and the MTA to determine under whose jurisdiction each section falls, and what type of barriers or green infrastructure would be most appropriate if other critical infrastructure are present in the vicinity (for example, gas lines under the surface of streets).