Reaching out to establish good relations with the media is key to a successful voluntary action effort. Tulsa's efforts were successful in that no further violations of the standard occurred, and the area was able to retain its attainment status. The public has become well informed about air quality issues, and on ozone alert days bus usage increases significantly. No rule was required. Participation is strictly voluntary.
Funding is provided by the public sector and by private contributions.
In Tulsa, the main factor was the ozone level. Similar Programs Ozone alert programs are very popular, and are on-going in many communities.