Colin Johnson is the Managing Director of D/Gauge, a position he has held for the past 4 years. Colin joined D/Gauge 9 years ago as a Principal Engineer, tasked with applying new clearance research to Network Rail electrification challenges. He has a Masters in Mechanical engineering and has also previously worked in Aerospace and Motorsport sectors. Colin has supported UK numerous clearance projects involving introducing new rolling stock, accommodated overhead electrification and clearance feasibility studies. He is an expert on UK clearance standards and most of the current and historical clearance methods that can be used. Colin and D/Gauge have a passion for making great clearance software and helping clients make the most of the space on their networks.