Suggested improvements:

• Automatically fill in the correct radius of transition curves/clothoids.

• Make an option somewhere (civil design file settings?) to select if you want to give transition curve values "by length" or "by constant". If you choose by length the constant should be calculated automatically when you fill in the length and curve radius in the editor. There is already a check made if the radius in the clothoids match the curve so why not correct it automatically...

• Make it possible to save one solution and then continue to edit/improve and then have an option to save the new solution instead of the first.

• With turnouts: Make it possible to have the end turnout free.

• Make it possible to save the elements even if there is no solution

• If the start or end element needs to be transposed for the editor to accept it - add a button to transpose the start or end elements.