Lysbilde 1

1
Experiences from the geocoding in the2005
Norwegian Person Travel Survey
Jon Martin Denstadli Institute of Transport
Economics (TOI) Oslo
2
Basic statistical units (statistical wards)
Smallest geographical area for presenting
statistics Norway is divided into approximately
14,500 wards - areas as uniform as possible with
respect to population size, communication and
building structure. In Oslo, Bergen, and
Trondheim (about 2,000 wards) the area covered by
a ward is less than 1 sq. km, the mean population
400-600 (max 3,500).
3
GEO Plug In in the 2005 NPTS

• Geo. databases
• GAB register
• Register of cities, urban settlements, and
  places

4
GEO Plug In in the 2005 NPTS
5
GEO Plug In in the 2005 NTPS
6
Quality of geocoding in the 2005 NPTS
Start End
Pre-coded addresses (home) 36 36
From the interview- complete address (street name and No.) 45 45
- street name only name of place only 6 7 7 6
No location (municipality only) 6 6
Combined start/end point 88
7
Enriching travel data
Distance matrix and level of service matrix For
every pair of statistical wards - distance
- travel time and cost (car) - vehicle time,
waiting time, frequency, cost, etc. (public
transport)
8
Enriching travel data

• Employment data
• No. of employees
• Industry
• Etc

• Employment data
• No. of employees
• Industry
• Etc

• Buildings (office and private)
• Type
• Size
• No. of storages
• Etc.

9
Car use in Oslo by place of residence (trips
starting at home)
10
Transport mode by destination (motorized modes)
(Trips with endpoint home not included)
11
Oslo - inner city
12
Conclusions

• People are capable of recalling addresses or
  provide other adequate information, and share
  this with the interviewer
• Lower location rate for people living in
  sparsely populated areas
• Additional data bases enriches travel data
• Detailed geoinformation combined with GIS
  provides new opportunities for presenting
  travel data

13
Oslo - Land use 1980
Residentialbuildings
Businessbuildings
Businesses manufacturing, storehouses,
commercial and administrative, hospitals, schools
etc.
14
Oslo - Land use 1980 new businesses 1985-2004.
New business buildings (including hospitals) with
at least 500 square metres of floor space built
1985- 2004. Square metres floor space. Oslo.
15
Car trips in the greater Oslo area
Public transport an alternative only on trips
with endpoint in the inner city. 70-80 percent
of destinations are in outside the inner city
(not including trips that ends in home).
16
Effect of accessibility by public transport and
access to parking - travel to work in Oslo.
Access to parking is defined as free parking at
the workplace.
17
Geocoding
Information on where trips start and end
Wards in Bergen

• Possible to integrate other information connected
  with the wards.
• Possible to use GIS.