The net expenditure for trunk road management and maintenance by Premium and All Purpose Units in 1999-2000 and the estimated net expenditure for 2000-01 is as follows:-UnitActual (£ 000s)1999-2000Estimated (£000s)2000-01Forth Premium Unit14,41215,000Clyde Premium Unit22,62918,000Tay Premium Unit12,61314,000Northeast All Purpose Unit7,1418,000Northwest All ...