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On first appearance it does seem to be a good idea, but then some airports are extremely complicated with taxiways all over the place and lots of crossing taxiways. You would have a lot of crossing colours.
As someone has mentionned already, some airport have 'follow the greens' where at night ATC light up the green centerline lights specific for each aircraft. Assuming ATC do not get it wrong, this system is great, but only works at night.
As the coloured taxiways would not change colour, you would be told to "taxi on the yellow until you get to the blue bit and follow that until the orange bit then left again onto the green bit and on the red bit for bay 6" Given an instruction like this, it is no real easier than being told "A1, B, G, E4 for bay 6". If pilots are getting confused with all the taxiway letters and going the wrong way, there is no reason they would not get confused with so many colours either. Not the mention the cost and how at night in the rain, or day in the snow it would all look the same anyway.
The future is moving taxiway maps on your Electronic Flight Bag showing where your aircraft is and your taximap marked out, or arrows on your HUD for those aircraft that have them.
Most dangerous accidents and incidents on the ground are runway incursion events and the colour idea could be useful if runways were a different colour to all taxiways, but having lots of different colours all over the place is not really the way.
As someone has mentionned already, some airport have 'follow the greens' where at night ATC light up the green centerline lights specific for each aircraft. Assuming ATC do not get it wrong, this system is great, but only works at night.
As the coloured taxiways would not change colour, you would be told to "taxi on the yellow until you get to the blue bit and follow that until the orange bit then left again onto the green bit and on the red bit for bay 6" Given an instruction like this, it is no real easier than being told "A1, B, G, E4 for bay 6". If pilots are getting confused with all the taxiway letters and going the wrong way, there is no reason they would not get confused with so many colours either. Not the mention the cost and how at night in the rain, or day in the snow it would all look the same anyway.
The future is moving taxiway maps on your Electronic Flight Bag showing where your aircraft is and your taximap marked out, or arrows on your HUD for those aircraft that have them.
Most dangerous accidents and incidents on the ground are runway incursion events and the colour idea could be useful if runways were a different colour to all taxiways, but having lots of different colours all over the place is not really the way.
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