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Sir George Young
asked the Secretary of State for Transport why the vegetation in the central reservation of the M4 is being ploughed up and replaced with tarmac; and at what cost.
Mr. Horam
This work near the Heston service area is to improve surface water
The tables below set out the information requested:
drainage. The tarmac will prevent rainwater soaking into the central reservation and sometimes causing flooding in the fast lanes. The average cost of the work is £23 per metre.