SHORT OVERVIEW OF NATIONAL TRAVEL SURVEYS

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SHORT OVERVIEW OF NATIONAL TRAVEL SURVEYS
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Auteur ou Service
2 décembre 2002
M.O. Gascon, CERTU, October 2006
COST meeting, Prague
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TYPE OF SURVEY(EU25, EU candidates, EFTA, USA,
South Corea)
Type of collection Survey Census None Non answered
Total 34 163 3 8 3
Survey mode Face to face Phone Postal Face to face tel Face to face postal Tel postal
Total 22 4 5 6 1 2 4
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RESPONSE RATE

SLOVAK REPUBLIC
LATVIA
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AVERAGE NUMBER OF TRIPS/PERSON/DAY
SWEDEN
LATVIA
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AVERAGE TOTAL TRAVEL DISTANCE /PERSON/DAY (MIN)
SWITZERLAND
LATVIA
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SOME DIFFERENCES AND CONSEQUENCES IN NPTS AND
LOCAL TRANSPORT SURVEYS
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Auteur ou Service
2 décembre 2002
M.O. Gascon, CERTU, October 2006
COST meeting, Prague
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DIFFERENCES ON SAMPLING PROCEDURES

• Sample size (for global figures)
• Source survey / census
• Households or persons (cluster effect / two
  stages sampling)

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DIFFERENCES ON SAMPLING PROCEDURES

• Age mini 6,10 (15) / no max,74/84
• Mobility for a single (previous) day or a week
• Long distance trips 2 weeks, 1 month, 3 months

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DIFFERENCES ON SAMPLING PROCEDURES

• Working day ? All days ?
• Continuous ? Cross sectional ?
• Face to face ? Telephone ? Postal ?

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DIFFERENCES IN DEFINITIONS

• Long distance trip gt50 km (D), gt200 km (B), gt80
  km (F)
• Walking trips all, limit on distance (45 m, UK)
  on duration (5, Italy)

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DIFFERENCES IN DEFINITIONS

• Mode several ? Main mode ? (longest part of the
  trip,hierarchy)
• Trip purposes not the same classification (3 to
  13 !)

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DIFFERENCES IN DEFINITIONS

• Additional information on certain kinds of trips
  tourism, taxi drivers, rounds (postmen,
  doctors)
• Vehicle-kilometers / passenger-kilometers

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DIFFERENCES IN INDICATORS

• Publications do not allow full comparison
• Modes car (driver/passenger),
  motorbike/bicycle, taxis, motorised/non
  motorised, public/private, rail, urban/interurban

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DIFFERENCES IN INDICATORS

• Purposes work/education, shopping/personal
  business, escort, leisure (sport/culture/visit to
  friends and relatives), home
• Distance, travel time, age different
  classifications

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FRENCH LOCAL TRAVEL SURVEYS

• ALMOST 100 SURVEYS ON 80 URBAN AREAS, 20 IN
  PROJECT BEFORE 2009
• FACE TO FACE IN THE MORE DENSE ZONE
• PHONE IN THE OUTSKIRTS

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WHY NOT BY PHONE IN LOCAL TRANSPORT SURVEY

• (more urbanised zone)
• Bias in the sample
• Land line phone equipement is decreasing urban
  area of Grenoble 2002 86
• Students only ½, they live in the more
  urbanised zone

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WHY NOT BY PHONE IN LOCAL TRANSPORT SURVEY

• (more urbanised zone)
• Daily mobility different(Grenoble)
• no land line phone 4,4 trips/pers/day,
• with land line phone 4,0
• more by PT ( 0,3), more on foot
• ( 0,3) and less by car (- 0,2)

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WHY BY PHONE IN THE OUTSKIRTS ?

• No land line phone 7
• Daily mobility less different 3,6 , with land
  line phone 3,7
• Less trips out of the municipality of home
• no land line phone 1/2,
• with land line phone 2/3

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WHY BY PHONE IN THE OUTSKIRTS ?

• Slight difference on global daily mobility figure
  if surveying only equipped households
• 3,77 trips/pers/day instead of 3,72

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