Electronic yellow pages (Electronic Pages) are proposed as a parr of e
stablishing information systems for an Intelligent Vehicle Highway Sys
tem (NHS) program. The basic requirement for trip planning is an infor
mation system which has a list of all available facilities (Yellow Pag
es). Usually the requirement for Yellow Pages is greater in nonwork tr
ips compared to work trips. Present computerized systems are static da
tabases of facilities, and interfaces to these types of systems are co
mplicated with many restrictions. Additionally, the information provid
ed by these systems does not fulfil user needs.