Michael Fitzmaurice (Roscommon-Galway, Independent)
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252. To ask the Minister for Transport, Tourism and Sport the amount of time after a person has ingested and or inhaled cannabis before the technology being used for roadside drug testing will return a negative result; and if he will make a statement on the matter. [21285/17]

Michael Fitzmaurice (Roscommon-Galway, Independent)
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253. To ask the Minister for Transport, Tourism and Sport the amount of time after a person has ingested cocaine before the technology being used for roadside drug testing will return a negative result; and if he will make a statement on the matter. [21286/17]

Michael Fitzmaurice (Roscommon-Galway, Independent)
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254. To ask the Minister for Transport, Tourism and Sport the amount of time after a person has ingested opiates before the technology being used for roadside drug testing will return a negative result; and if he will make a statement on the matter. [21287/17]

Michael Fitzmaurice (Roscommon-Galway, Independent)
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255. To ask the Minister for Transport, Tourism and Sport the amount of time after a person has ingested benzodiazepines before the technology being used for roadside drug testing will return a negative result; and if he will make a statement on the matter. [21288/17]

Shane Ross (Dublin Rathdown, Independent)
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I propose to take Questions Nos. 252 to 255, inclusive, together.

The Medical Bureau of Road Safety has the statutory responsibility for testing and approving preliminary drug testing devices. As these are technical question relating to the devices, I have referred them to the Bureau for direct reply. I would ask the Deputy to contact my office if a response has not been received within ten days.