** Acusensus ACE.AX jumps as much as 14% to A$1.14, highest since Feb. 26

** AI-based road safety solutions firm expands existing mobile phone and seatbelt technology agreement with the Queensland Department of Transport and Main Roads for ~A$27.4 mln ($17.5 mln)

** Contract will provide additional "Heads-Up" solution to detect illegal mobile use, enforce seatbelt compliance

** More than 849,000 shares traded, 5.7x the 30-day avg

** Stock up 39.2% YTD

($1 = A$1.5659)

(Reporting by Nikita Maria Jino in Bengaluru)

((Nikita.Jino@thomsonreuters.com;))