SN:3288 National Travel Survey 1988-1997

Please note that the 1988 to 1993 study has been superceded by new material 
covering the periods 1988 to 1995 and 1995 to 1997.

Data
The data for this study covers the period 1988 to 1995 and 1995 to 1997.
This means there is DUPLICATE data for 1995.

Documentation
Users are warned that the documentation held at the Archive for this study 
does NOT comprehensively cover the data; there is only a small amount of 
documentation for the period 1995 to 1997.  

Users are strongly advised to obtain a copy of the "National Travel Survey 
Technical Report 1997" by Stephanie Freeth, Jeremy Barton, Barbara Noble, 
Chris Sullivan & Darren Williams. (ISBN 1 85774 295 8).

Please note the following points regarding the files supplied by the Archive

1. The 'Quanline' Codebook.

Archive's Data 	Quanline Codebook

0 		10
-		11
&		12

In the Quanline Codebook grand totals do not include the following values: 
system missing; NA; and DNA.  Many of the variables in this dataset 
contains blank or system missing values; according to the codebook 
these should be coded as 'Post 1991' or 'Pre 1992'.

LDJ Level
The variable L2 (LONG DISTANCE JOURNEY DAY) has a value label of NA which 
is coded 32 in the Quanline codebook and 50 in the data.

Household Level
The variable H17 (TYPE OF RAILWAY STATION) has a value of 6 which has no 
value label at present.

2. Duplicate Information
- in file ind8895 variables I1 and I1a contain the same information
- in file jou8895 variables J3 and J3a contain the same information
- in file sta8895 variables S1 and S1a contain the same information

3. Value Labels for 1995-1997 datasets.
The numbers contained within the value names do not correspond with the
 numbers contained in the values.