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SHORT OVERVIEW OF NATIONAL TRAVEL SURVEYS. 1. Auteur ou Service. M.O. Gascon, CERTU, October 2006. COST meeting, Prague. 2 décembre 2002. TYPE OF SURVEY (EU25, EU candidates, EFTA, USA, South Corea). RESPONSE RATE. %. SLOVAK REPUBLIC. LATVIA. AVERAGE NUMBER OF TRIPS/PERSON/DAY. SWEDEN.

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short overview of national travel surveys

SHORT OVERVIEW OF NATIONAL TRAVEL SURVEYS

1

Auteur ou Service

M.O. Gascon, CERTU, October 2006

COST meeting, Prague

2 décembre 2002

response rate
RESPONSE RATE

%

SLOVAK REPUBLIC

LATVIA

some differences and consequences in npts and local transport surveys

SOME DIFFERENCES AND CONSEQUENCES IN NPTS AND LOCAL TRANSPORT SURVEYS

6

Auteur ou Service

M.O. Gascon, CERTU, October 2006

COST meeting, Prague

2 décembre 2002

differences on sampling procedures
Sample size (for global figures)

Source : survey / census

Households or persons (cluster effect / two stages sampling)

DIFFERENCES ON SAMPLING PROCEDURES
differences on sampling procedures1
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

DIFFERENCES ON SAMPLING PROCEDURES
differences on sampling procedures2
Working day ? All days ?

Continuous ? Cross sectional ?

Face to face ? Telephone ? Postal ?

DIFFERENCES ON SAMPLING PROCEDURES
differences in definitions
Long distance trip = >50 km (D), >200 km (B), >80 km (F)

Walking trips : all, limit on distance (45 m, UK) on duration (5’, Italy)

DIFFERENCES IN DEFINITIONS

10

differences in definitions1
Mode : several ? Main mode ? (longest part of the trip,hierarchy)

Trip purposes : not the same classification (3 to 13 !)

DIFFERENCES IN DEFINITIONS
differences in definitions2
Additional information on certain kinds of trips : tourism, taxi drivers, rounds (postmen, doctors)

Vehicle-kilometers / passenger-kilometers

DIFFERENCES IN DEFINITIONS

12

differences in indicators
Publications do not allow full comparison

Modes : car (driver/passenger), motorbike/bicycle, taxis, motorised/non motorised, public/private, rail, urban/interurban

DIFFERENCES IN INDICATORS
differences in indicators1
Purposes : work/education, shopping/personal business, escort, leisure (sport/culture/visit to friends and relatives), home

Distance, travel time, age : different classifications

DIFFERENCES IN INDICATORS
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

FRENCH LOCAL TRAVEL SURVEYS
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

WHY NOT BY PHONE IN LOCAL TRANSPORT SURVEY

16

why not by phone in local transport survey1
(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)

WHY NOT BY PHONE IN LOCAL TRANSPORT SURVEY

17

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

WHY BY PHONE IN THE OUTSKIRTS ?

18

why by phone in the outskirts1
Slight difference on global daily mobility figure if surveying only equipped households :

3,77 trips/pers/day instead of 3,72

WHY BY PHONE IN THE OUTSKIRTS ?

19

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