You seem to be in a similar position that a lot of seed stage startups are in. At this stage, angel investors are usually appropriate to talk to about making a seed investment.

Keep in mind that "traction" can mean different things at different stages. At your stage, traction could include early customer interest, pilot program commitments, etc. Of course, it's always better to have customer/revenue traction but use what you have.

We raised several hundred thousand dollars before we ever launched. But we were able to show prototypes, early customer interest, and confirmed lead customers.

I'd begin the rounds with angel investors in your area and in your field for "feedback meetings." Try to find mentors that are willing to advise you, even informally. Remember, ask for money -- receive advice. Ask for advice, receive money.

Best of luck and let me know if I can be of help.