HPSA

High Performance Switch Actuator. The electric point machine in a HPSS installation.
Found on http://www.scot-rail.co.uk/page/Glossary

HPSA

See Health Professional Shortage Area.
Found on http://www.pohly.com/terms_h.html

HPSA

Health Professional Shortage Area
Found on http://www.encyclo.co.uk/local/20895
No exact match found