TRB Internet Survey

• First Survey 102 Respondents

• Second Survey 66 Respondents

Number of Surveys Reported

Survey Type 1990 to 2000 2001/2002 + Total Household 36 11 47 External 36 4 40 Parking 23 3 26 Commercial Vehicle 16 7 23 Visitor 5 2 7 Transit On- Board 28 2 30 Work Place 10 5 15

Incentive ProvidedSurvey Type Yes No Total Household 15 28 43 External 3 29 32 Parking 0 29 29 Commercial Vehicle 1 15 16 Visitor 0 6 6 Transit On- Board 3 29 32 Work Place 0 11 11

Conducting SurveySurvey Type Consultant I n- House Other Total Household 39 6 3 48 External 30 3 3 36 Parking 8 18 3 29 Commercial Vehicle 17 5 2 24 Visitor 6 3 0 9 Transit On- Board 24 10 5 39 Work Place 8 6 1 5

Survey for Updating Model

Survey Type Yes No Total Household 43 5 48 External 34 5 39 Parking 11 18 29 Commercial Vehicle 13 10 23 Visitor 4 4 8 Transit On- Board 11 27 28 Work Place 11 4 15

Survey CostsSurvey Type Range Household $ 2,500 to $ 4,000,000 External 50,000 to 3,500,000 Parking 1,000 to 50,000 Commercial Vehicle 3,000 to 250,000 Visitor Survey 10,000 to 272,000 Transit On- Board 1,000 to 140,000 Work Place 272,000 to 1,000,000

Survey Frequency Done Past Do Next Survey Type 10 Yrs 2 Yrs Like to Do Will Not Do Total Household 40 9 23 9 81 External 36 4 20 9 69 Parking 28 3 14 14 59 Commercial Vehicle 20 6 26 11 63 Visitor 8 2 20 20 50 Transit On- Board 40 1 17 12 70 Work Place 12 4 23 18 57

Sample Size

Survey Type Range Household 250 HH to 25,000 HH Parking 1,000 to 4,000; 800 Employers, All of CBD, All Off Street Commercial Vehicle 100 Veh to 5,000 Veh Transit On- Board 75 to 10,000; Varied Work Place 140 Locations to 1,500 to All Employers in area

Time of YearSurvey Type Fall Winter Spring Summer Total Household 31 3 7 3 44 External 14 1 11 5 31 Parking 9 0 5 9 23 Commercial Vehicle 8 1 5 2 16 Visitor 2 0 1 2 5 Transit On- Board 9 2 8 4 23 Work Place 4 0 3 1 8

Types of Incentives

Survey Type < $ 2 > $ 2 Prize Gift Other None Total Household 2 4 6 2 1 15 External 1 2 3 Commercial Vehicle 1 1 Transit On- Board 2 2

Trip Data Collected For

Survey Type Weekdays Only Weekdays & Weekends Total Household 27 16 43 External 29 4 33 Commercial Vehicle 14 4 18 Visitor 2 4 6 Transit On- Board 20 12 32

Follow Up Survey

• 66 Respondents

Household Survey

Sampling Approach 24% Random 20% Stratified (32 Obs) Recruitment Method 20% Mail 29% Telephone (34 Obs) Data Retrieval 21% Mail 29% Telephone (34 Obs) Geocoding Level 27% Long/Lat 18% Zone (33 Obs)

Household Survey

GPS Component Only 3 said yes Sample Size 200 to 500

Vehicle I nfo Vehicle I nfo Year, Make, Model, Odom 29% (roughly) Overall HH Trip Rate 1 reported 8 per household

Overall Per Trip Rate 1 reported 3 and 1 reported 4

Pct Zero Trip Hhs No Response

Pct Zero Trip Persons No Response

External Survey

Method I ntercept/ I nterview 60% Record License 22% (21 Obs) Data Retrieval Mail 54% I n- Person 32% (28 Obs) Sites Surveyed Varied from 1 to 100 AADT > 25 K Varied from 0 to 16 Legal Restrict. 41% Yes 59% No (17 Obs) > 80% Coordinated with Law Enforcement (21 Obs) Law Played Moderate to Small Role in 84% (18 Obs)

Types of Legal Restrictions

• Could Not Conduct Roadside Interviews

• Could Not Stop Vehicles

• Could Not Stop Vehicles on Interstates

• Privacy Issues with Use of License Numbers

• Could Not Use Off-Duty Law Enforcement Officers

Parking Survey

Recruitment I n- person 50% Mail/Telephone 50% (20 Obs) Data Retrieval I n- person 43% Mail 35% (23 Obs) Sample based on parking location

Parking Survey Questions (23 Obs)

Cost 30% Frequency of Use 43% Subsidies 9% Mode Choice/Stated Pref 17%

Commercial Vehicle Survey

Sample Business 47% I ntercept 33% (15 Obs) Selection I ndustry Type 42% Size of Firm 21% (24 Obs) Data Retrieval I n- person 48% Mail 33% (23 Obs) Travel Log Used Yes 50% No 50% (13 Obs) Reporting Length One day 80% Two days 20% (5 Obs) Types of Vehicles Heavy Trucks 50% Light Trucks 40% (30 Obs)

Visitor Survey

Recruitment I n- Person 50% Mail 25% (4 Obs) Where Other 67% Hotels/Motels 33% (3 Obs) Data Retrieval I n- person 50% Mail 50% (4 Obs)

Transit On-Board Survey

Sample Route & Run 76% Transit Stop 14% (21 Obs) Data Retrieval I n- person 80% Mail 16% (25 Obs) Attitudinal ? s 70% responded Yes (17 Obs)

Work Place Survey

Recruitment Telephone 44% I n- person 25% (16 Obs) Data Retrieval Mail 33% I n- person 27% (15 Obs) Sample Employees only 78% All Persons 22% (9 Obs)

Work Place Survey Sample (9 Obs)

• Industry or SIC 56%

• No. Employees 22%

• Location 22%

Work Place Trip Geocoding (4 Obs)

• Traffic Zone 25%

• Census Tract 75%