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Travel Survey Manual

Cambridge Systematics, Travel Model Improvement Program (U.S.), United States. Environmental Protection Agency
Trained coders translate the answers into codes, and record them on coding sheets; and 3. Data entry specialists enter the codes into a computer data file.  ...  There are no source records like in pencil and paper interviews to verify that the survey data was entered into the computer accurately.  ...  Coding to Zones -In rural areas where address systems do not exist, the most effective approach may involve coding directly to an established zone system (e.g., city boundaries or zip codes).  ... 
doi:10.21949/1404543 fatcat:jeuxnsbhxjhxbm2zqyjssejx4a