§ Mr. SpeedTo ask the Secretary of State for Transport if he will list the trunk roads and motorways completed in the last 10 years where average daily vehicle flows are respectively below and above his Department's forecasts made at the time of authorisation.
§ Mr. Peter BottomleyThe Department has systematically monitored the accuracy of forecasts for trunk road (including trunk motorway) schemes for which orders were published in 1981 or later. Of 47 road schemes which
LATCC1 ScOATCC2 1988–1987 1987–1986 1988–1987 31987–1986 Hardware failures 2 1 2 — Software failures 5 4 21 — Power supply failures 0 4 — — Total4 5 7 9 23 — 1 London Air Traffic Control Centre. 2 Scottish and Oceanic Air Traffic Control Centre. 3 Scottish computer system became operational April 1987. 4 Failures which resulted in ATC Flight Plan Processing Systems reverting to manual operation. 5 LATCC total represents 0.16 per cent. of the time for 1988–87 and 0.17 per cent. for 1987–86. ScOATCC total represents 1.73 per cent. of the time for 1988–87.