§ Mr. Penhaligonasked the Secretary of State for the Environment how many floodlights are installed on motorways.
§ Mr. CarmichaelFloodlights are not used for motorway lighting. It is estimated that about 21,000 purpose-designed road lighting lanterns are in use on the Department's motorways in England.
§ Mr. Penhaligonasked the Secretary of State for the Environment for how many hours per week the motorways are illuminated by floodlight in December.
§ Mr. CarmichaelRoad lighting lanterns on the Department's motorways in England are controlled by photo-electric units, which respond to the ambient light levels. It is estimated that the lighting hours per week in December will be of the order of 110 hours.
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§ Mr. Penhaligonasked the Secretary of State for the Environment what is the power used in megawatt/hours providing floodlights on motorways during a week in December.
Mr. CarmicbaelIt is estimated that the energy consumed in lighting the Department's motorways in England is 500–600 megawatt hours per week in the month of December.