Traffic counts are conducted throughout the city either through resident requests, development projects, specific and general plans, or engineering studies. The Department of Transportation has collected these traffic and made them available to the public. The 24-hr bi-directional traffic volume counts are available in two different formats: map based (years 2009 & 2010) and spreadsheet (years 2000 to 2010). One map is a citywide traffic volume map; the other is a more detailed East and West Pasadena traffic volume map.