Who should I contact to sell a new type of sign for wayfinding or
directional/marking applications at Airports (and perhaps Malls)?

Said another way, if I wanted to introduce and try to sell a new type
of sign for wayfinding applications at Airports, who are the possible
decision-makers that I should contact? Would it be some sort of
transportion authority, municipal authority, airport authority, etc.? 
Within this or these organizations, who are the particular
people/contacts(titles, possibly names, etc.) that I should contact to sell my
new sign type?

Information on the Sign-type:  The signs that I am interested in are
both inside and outside the airport and they provide direction or
marking.  These signs are NOT the big 10 or 20 foot green signs with
white lettering that are used outside an airport for directions to
terminals and airlines, and that are probably the responsibility of
the Highway Transportation Authority.  The signs I speak of are
smaller and more the responsibility of the Airport.  They are used to
mark or provide direction to a variety of things, that may include
gates, terminals, airlines, etc..

Thank you for your interest!

Hi Chris - I'm interested in this one.

Hi Deep Seep,  Sounds good!  I will probably be changing it somewhat
since time has passed and my knowledge has improved.  This could
happen in the next couple of days or probably at the latest this
upcoming Sunday.  Good to know you are out there!  Regards