§ Mr. Dudley Smithasked the Secretary of State for Transport what is the factor used to convert 1979 survey prices to 1980 survey prices and 1980 survey prices to 1981 survey prices for each of the following: (a) motorway and trunk road construction, (b) motorway and trunk road maintenance, (c) local authority road construction and (d) local authority road maintenance.
§ Mr. Kenneth ClarkeThe following factors have been used to revalue these programmes from 1979 survey prices to 1980 survey prices:
factor Motorway and Trunk Road Construction Road output price index 1.238 Land Cost index 1.232 Local Road Construction Tender price index 1.208 Cost outturn index 1.193 Land cost index 1.232 Motorway and trunk road maintenance 1.193 Local Road Maintenance 1.174 Because the mix of expenditure between land, work in progress and new works varies from year to year the result of using these factors can differ according to which years expenditure is being re-priced.
The 1981 survey is being conducted in cash terms for each year in the survey period. For future years in the survey period these will be calculated from a 1981–82 base. Because actual 1981–82 prices are not yet known, it is not possible to give revaluation figures to move from 1980 survey prices to these cash terms.