New Zealand's railways have played a critical role in New Zealand's transport system for more than 150 years.
But there's many things that a lot of the public doesn't know about trains.
Someone who is an expert is Graeme Carter, President of the Railways and Locomotive Society of New Zealand and owner of G T Carter Transport Books Whanganui.
He's our expert this week. If you have any questions for him, text 2101 or email jesse@rnz.co.nz.
Photo: RNZ / Samuel Rillstone
