ASSESSING THE IMPACT OF VEHICLE HETEROGENEITY ON TRAFFIC FLOW EFFICIENCY ON A BRIDGE USING WEIGH-IN-MOTION DATA. - SUGIRA, JEAN CLAUDE; NSHIMIYIMANA, MARC; DE DIEU NINTERETSE, JEAN; NIYOGAKIZA, PHILEMON (Baltic Journal of Road & Bridge Engineering (RTU Publishing House), 2026)