In this particular case the form looks tall because of the single-column layout, i.e., labels on top of input fields, leaving an unused void of about half the available real estate to the right (while hiding half of the form under the fold).
If is was a two-column layout (labels to the left of inputs) then it wouldn't be so tall, it would fit nicely into a single page and this question wouldn't have been asked. Examples and help should be to the right of the input (making it a 3-column form in fact).
There is a generalized belief that single-column forms are more usable. This is not so. Additionally IMO single-column is worse in that usually calls for smaller font labels, which can be an issue for audiences with users aged 50+ years.
This form is 15 fields worth, it can't be regarded as daunting, and it can well fit in a single page.
Setting the fields in two columns with labels on top is not a good two-column layout. Such a layout would call for user confusion. You can set more then one field in a single row when the fields are related, like thus:
Vehicle: model [______] series [__] year [__]
As an additional comment, I'd avoid setting all the inputs with the same size. The input field size should convey a hint about how much data you expect. It also breaks the regularity that would call for user errors (the user looks at the supporting paper documents and when coming back to the form chooses a wrong target field because they are all so alike).
As of the question, I had an experience with online forms containing 100 to 200+ fields, and breaking them in pages was a must.
The forms were well organized in sections, so the sections were the "natural" splitting points for us.
The splitting thing converted a really daunting form in a laborious-like task.
The user would focus on a section at a time, and the paging actions prevented the system to timeout the session, which is something that has to me accounted for in such cases: when the user submits after working for quite a while the system tells that the session expired a while ago.