IÉ‟s technical information sheet, MW50 „Accommodation level crossings‟ (MW50), does not include any requirement for the erection of black and yellow marker posts at level crossings, which indicate the decision point to the user. Section 19 of IÉ‟s „The SAFE use of Unattended Railway Level Crossings‟ booklet, first published in November 2006, states that “Black and yellow marker posts are being introduced at certain level crossings”, and continues that “The markers are positioned at 2 metres (6 feet) from the nearest rail and on each approach to the railway line”. Where these black and yellow are erected.