Boso View Express
BVE is a great program. The only potential problem is that the creator of a route might not get some things right. This guide contains tips on how to make your BVE railway you're creating a GREAT one. Not good, but GREAT.
Actually riding the route you plan to make is an excellent way to get an idea materialized. Let's say you wanted to do a BVE rout for New York City Transit's line. What you'd need to do is ride a train from terminal to terminal.
You have to record data concerning signal numbers, curves, slopes, etc. If you can't write that fast, you could either do multiple trips along the line, or make a recording (video or audio with dictation). You can make drawings of the curves and slopes as you dictate the signal numbers.
Note: If you're a train operator, make sure your supervisors don't object to bringing a video camera aboard. I am NOT responsible for the loss of job or property directly or indirectly resulting from following these guidelines. You do this AT YOUR OWN RISK!
If you can obtain construction drawings (blueprints) for the line you want to build for BVE, USE THEM! They are always drawn to scale, so you can use the dimensions to make objects, and basically use the correct physical alignment of the tracks to your advantage!
Just convert the data to the BVE railway file. Use signal numbers as reference points. Usually, there is a pattern to the placement of signals (100's of feet, miles, etc.) that can help you determine distance.
That's how to make a GREAT BVE Route.