South Florida Commuter Travel Survey Summary and Preliminary Results Southeast Florida FSUTMS User Group Meeting June 1, 2012
Agenda Introduction Survey Design Survey Implementation Preliminary Findings Summary 2
Introduction Both Regional and Microsimulation Models Make Assumptions about People s Route Choice: Regional model shortest path Microsimulation vehicle interactions (gap, car following) Based on Theories without Empirical Evidence Need to Understand People s Route Choice Behavior and Identify Factors Influencing People s Choices Help Improve Travel Forecasting Models Intended dto be a Pilot Study: Test survey instruments Collect empirical evidence 3
Survey Design On line Survey with Google Map Volunteers with Smartphones to Track the Actual Route Information Actual Travel Time Route Variation 4
http://sfsurvey.myworktrip.net 5
Using Google Map to Select the Route 6
Using Smartphones Solicit Volunteers and Install Free APP (GPS Tracker) Work Trip in the Morning Only Data Collection for Five (5) Weekdays Confidentiality Guaranteed Can Terminate Any Time 7
Survey Implementation From Feb 17, 2012 to March 22, 2012 Email Invitations Employment centers Professional organizations Local social and cultural organizations Social Media Survey Announcement Cards Residential communities Shopping centers Office buildings Dedicated Email Account for Communications 8
Route Comparison Tool 9
Example of Same Route 10
Example of Different Route 11
Preliminary Findings 12
1 & 2. Responds Home & Work Addresses Home Work 13
3. Stated Routes vs. Google Default Routes 0.0% 10.0% 20.0% 30.0% 40.0% 50.0% 60.0% 70.0% Different 37.8% Same 62.2% 14
5. Reported vs. Google Default Travel Time 130 120 110 100 tes Reported Travel Time, minu 90 80 70 60 50 40 30 20 10 0 0 10 20 30 40 50 60 70 80 90 100 Google Default Time, minutes 15
6.How Often Do You Use This Route? 0.0% 10.0% 20.0% 30.0% 40.0% 50.0% 60.0% 70.0% Every Weekday 62.6% Almost Every Workday 16.2% Often. Use Alternate Route 13.1% Sometimes. Routinely Use Alt. 3.8% Rarely. Make Mk Regular Int. Stops 35% 3.5% Refused 0.8% 16
7a.Travel time the route takes to work? 17
7b. Distance of the route? 18
7c. Amount of tolls to pay? 19
7d. Reliability of travel time? 20
7e. Number of traffic lights? 21
7f. Number of left turns? 22
7g. Real time road condition info? 23
7h. Presence of School zones? 24
7i. Safety of the neighborhood? 25
7j. Road construction? 26
7k. Scenic view of the road? 27
7l. Familiarity with the route? 28
7. Scores for Influencing Factors Physical Conditions 0 2 4 6 8 10 Travel time the route takes to work 928 9.28 Distance of the route 7.47 Amount of tolls to pay 6.18 Number of traffic lights 7.00 Number of left turns 4.59 Presence of School zones 6.75 Traffic Conditions Reliability of travel time 8.88 Availability of real time road condition information 5.77 Road construction 7.10 Other Conditions Safety of the neighborhood to go through 6.17 Scenic view of the road 3.81 Familiarity with the route 6.70 29
8. Other Factors Sample Comments Avoids traveling west to I 95 all other routes are typically just as congested i I prefer to ride my bike. I do not like question 6 Please note that I am a full time telecommuter. Other drivers using the roadway/safety More roadway Safety, less truck volumes, less tran i sometimes stop at the sheridan train station and finish the construction on I595 ASAP Avoid railroad crossings 30 The most important thing for me in choosing a rout Direct route connection. Amount of traffic most efficient, less traffic route Congestion quickest route have to factor in traffic lights, Avoid 1 95
9. Survey Respondents Gender Distribution 0.0% 10.0% 20.0% 30.0% 40.0% 50.0% 60.0% Female 42.9% Male 53.5% Refused 3.5% 31
10. Respondents Age Distribution 0.0% 10.0% 20.0% 30.0% 40.0% 50.0% 60.0% 70.0% 80.0% 29 or Younger 8.8% 30 54 Years Old 69.4% 55 or Older 20.7% Refused 1.0% 32
11.Respondents Income Distribution 0.0% 10.0% 20.0% 30.0% 40.0% 50.0% 60.0% 70.0% Lower than $25,000 2.0% $25,001 $40,000000 93% 9.3% $40,001 $ 75,000 26.8% More than $75,001 59.8% Refused 2.0% 33
12. Smartphone Use 0.00% 5.00% 10.00% 15.00% 20.00% 25.00% 30.00% 35.00% 40.00% No SmartPhone 21.21% iphone 36.87% Android 24.49% BlackBerry 13.13% Other 4.04% (blank) 0.25% 34
13. Use Cell Phone for Survey? 0.00% 10.00% 20.00% 30.00% 40.00% 50.00% 60.00% 70.00% No 57.58% Yes 20.45% (blank) 21.97% 35
GPS Route vs. Google Route Sample 1 Google Survey Route 36
GPS Route vs. Google Route Sample 1 GPS Route 37
GPS Route vs. Google Route Sample 2 Google Survey Route 38
GPS Route vs. Google Route Sample 2 GPS Route 39
Cell Phone GPS Data Very Small Sample Often Different from Google Default or Stated Routes Sometimes Missing Data Points Speed Data Inconsistent GPS Data Not Used for Analysis 40
Scores for Influencing Factors by Gender 0 2 4 6 8 10 Physical Conditions Travel time the route takes to work Distance of the route Amount of tolls to pay Number of traffic lights Number of left turns Presence of School zones Traffic Conditions Reliability of travel time Availability of real time road condition information Road construction Other Conditions Safety of the neighborhood to go through Scenic view of the road Familiarity with the route Total Male Female 6.18 6.22 6.12 4.59 4.76 4.38 5.77 5.70 5.86 7.47 7.19 7.84 7.00 7.03 695 6.95 6.75 6.65 6.88 7.10 7.06 7.05 6.17 5.99 6.39 3.81 3.72 3.88 6.70 6.48 7.03 9.28 916 9.16 9.43 8.88 8.90 8.73 41
Model Route SERPM 652l 2005 AM Loaded Network Cube Path Building AM Congested Travel Time as Cost Variable 42
Example 1: Zone 873 Zone 210 Google Default and Reported SERPM 2005 AM Loaded Network Source Google Default Surveyor Reported Model Congested Travel Time (minutes) 12 15 10.36 43
Example 2: Zone 3984 Zone 3440 Google Default and Reported SERPM 2005 AM Loaded Network Source Google Default Surveyor Reported Model Congested Travel Time (minutes) 27 45 39.47 44
Example 3: Zone 2049 Zone 3228 Google Default and Reported SERPM 2005 AM Loaded Network Source Google Default Surveyor Reported Model Congested Travel Time (minutes) 38 45 35.65 45
Example 4: Zone1999 Zone1766 Google Default and Reported SERPM 2005 AM Loaded Network Source Google Default Surveyor Reported Model Congested Travel Time (minutes) 25 30 24.33 46
Example 4 Influencing Factors (175) 0 2 4 6 8 10 Physical Conditions Group Individual Travel ltime the route tk takes to work Distance of the route Amount of tolls to pay Number of traffic lights Number of left turns Presence of School zones 4.6 6.0 6.2 5.8 60 6.0 6.0 6.8 7.0 8.0 7.5 8.0 93 9.3 Traffic Conditions Reliability of travel time Availability of real time road condition information Road construction 6.0 6.2 7.0 7.0 8.0 8.9 Other Conditions Safety of the neighborhood to go through Scenic view of the road Familiarity with the route 3.8 6.0 7.1 6.7 8.0 80 8.0 47
Example 5: Zone 3901 Zone 3261 Google Default and Reported SERPM 2005 AM Loaded Network Source Google Default Surveyor Reported Model Congested Travel Time (minutes) 25 60 34.49 48
Example 5 Influencing Factors (272) 0 2 4 6 8 10 12 Physical Conditions Group Individual Travel time the route takes to work Distance of the route Amount of tolls to pay Number of traffic lights Number of left turns Presence of School zones 2.0 2.0 4.6 5.0 6.2 5.8 6.8 7.5 8.0 9.3 9.0 9.0 Traffic Conditions Reliability of travel time Availability of real time road condition information Road construction 6.2 6.0 7.0 8.0 89 8.9 10.0 Other Conditions Safety of the neighborhood to go through Scenic view of the road Familiarity with the route 2.0 3.8 6.0 7.1 6.7 7.0 49
Preliminary Findings Many Factors other than Time and Distance Influence People s Route Choice Decisions Reported Travel Times are in Five (5) Minutes Increment and Usually Longer Than Actual Travel Times Over 60% of Commuters Use the Same Routes Modeled Paths Could be Different from Actual Paths, thought More Analyses are Needed. 50
Summary Google Map Effective for the Survey More Tests Needed Due To Varying OS and Browsers Reached Target Sample Email Links More Effective than Announcement Cards Clear Description of the Purpose of the Survey More Encouragement/Incentives Needed for Using Personal Smartphones for the Survey 51