title: Walking associated with public transit: moving toward increased physical activity in the United States.
abstract: OBJECTIVE
  We assessed changes in transit-associated walking in the United States from 2001 to 2009 and documented their importance to public health.
  
  
  METHODS
  We examined transit walk times using the National Household Travel Survey, a telephone survey administered by the US Department of Transportation to examine travel behavior in the United States.
  
  
  RESULTS
  People are more likely to transit walk if they are from lower income households, are non-White, and live in large urban areas with access to rail systems. Transit walkers in large urban areas with a rail system were 72% more likely to transit walk 30 minutes or more per day than were those without a rail system. From 2001 to 2009, the estimated number of transit walkers rose from 7.5 million to 9.6 million (a 28% increase); those whose transit-associated walking time was 30 minutes or more increased from approximately 2.6 million to 3.4 million (a 31% increase).
  
  
  CONCLUSIONS
  Transit walking contributes to meeting physical activity recommendations. Study results may contribute to transportation-related health impact assessment studies evaluating the impact of proposed transit systems on physical activity, potentially influencing transportation planning decisions.
authors: Epidemic Intelligence Service and the National Center for Environmental Health, Healthy Community Design Initiative, Centers for Disease Control and Prevention (CDC), Atlanta, GA 30341, USA. afreeland@cdc.gov
authors: Amy L
authors: AL
authors: Freeland
authors: Shailendra N
authors: SN
authors: Banerjee
authors: Andrew L
authors: AL
authors: Dannenberg
authors: Arthur M
authors: AM
authors: Wendel
mesh_terms: D000293:Adolescent; D000328:Adult; D003625:Data Collection; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D011634:Public Health / Q000706:statistics & numerical data; D012959:Socioeconomic Factors; D013997:Time Factors; D014186:Transportation / Q000706:statistics & numerical data*; D014481:United States / Q000453:epidemiology; D016138:Walking / Q000706:statistics & numerical data*