7G Conduct Field Data Collection 50 – Inbound and Outbound Door and Driveway Counts 50 Interviews 51 Multimodal Cordon Counts 52 Use of Electronic Recording Devices 53 Step 7H Supervise in Field 53 – Step 7I Check Data after Each Period 53 – PART D. SURVEY DATA REDUCTION 55 Step 1 Summarize Cordon Counts 55 – Step 2 Process Interview Data 55 – Interviews and Door Counts 55 Expansion Factors 56 Step 3 Determine Trip Generation and Mode Splits 57 – Exception Survey Site with Shared Parking with Other On-Site Land Uses 60 – Figure 1. Sample Half-Mile Circle of Intersections 6 Figure 2. Apartment AM Street Peak Hour Comparison of Estimate vs. Count for SGTG Database 7 Figure 3. Apartment PM Street Peak Hour Comparison of Estimate vs. for SGTG Database 8 Figure 4 . Office AM Street Peak Hour Comparison of Estimate vs. for SGTG Database 9 Figure 5. Office PM Street Peak Hour Comparison of Estimate vs. for SGTG Database 10 Figure 6. Sample Estimator Spreadsheet Input and Output Appearance 14 Figure 7. Sample Multimodal Cordon Count Form Driveways and Walkways 38 – Figure 8. Sample Cordon Count Form Walkways Only 39 – Figure 9. Sample Manual Interview Form 40 Figure 10. Sample Site Characteristics Data Form 44 Figure 11. Sample Manual Multimodal Count Form with Surveyor Instruction 49 Table 1. Example of Survey Site and Area Characteristics 35 Table 2. Sample of Survey Intercept Percentages 43 3. Sample Apartment Peak Hour Non-Directional Person Trips 58 Table 4. Sample Summary of Mode Splits and Vehicle Occupancies 59
7G – Conduct Field Data Collection 50 Inbound and Outbound Door and Driveway Counts 50 Interviews 51 Multimodal Cordon Counts 52 Use of Electronic Recording Devices 53 Step 7H – Supervise in Field 53 Step 7I – Check Data after Each Period 53 PART D. SURVEY DATA REDUCTION 55 Step 1 – Summarize Cordon Counts 55 Step 2 – Process Interview Data 55 Interviews and Door Counts 55 Expansion Factors 56 Step 3 – Determine Trip Generation and Mode Splits 57 Exception – Survey Site with Shared Parking with Other On-Site Land Uses 60 Figure 1. Sample Half-Mile Circle of Intersections 6 Figure 2. Apartment AM Street Peak Hour Comparison of Estimate vs. Count for SGTG Database 7 Figure 3. Apartment PM Street Peak Hour Comparison of Estimate vs. for SGTG Database 8 Figure 4 . Office AM Street Peak Hour Comparison of Estimate vs. for SGTG Database 9 Figure 5. Office PM Street Peak Hour Comparison of Estimate vs. for SGTG Database 10 Figure 6. Sample Estimator Spreadsheet Input and Output Appearance 14 Figure 7. Sample Multimodal Cordon Count Form – Driveways and Walkways 38 Figure 8. Sample Cordon Count Form – Walkways Only 39 Figure 9. Sample Manual Interview Form 40 Figure 10. Sample Site Characteristics Data Form 44 Figure 11. Sample Manual Multimodal Count Form with Surveyor Instruction 49 Table 1. Example of Survey Site and Area Characteristics 35 Table 2. Sample of Survey Intercept Percentages 43 3. Sample Apartment Peak Hour Non-Directional Person Trips 58 Table 4. Sample Summary of Mode Splits and Vehicle Occupancies 59