Fig. 4From: Evaluation of the effects of school zone signs and markings on speed reduction: a driving simulator studyThe SD of acceleration of each design alternative for the two types of schools. WA School Crossing Ahead Warning Assembly, IS School Crossing Ahead Informational Sign, SL speed limit sign, RSWA Reduce Speed and School Crossing Warning Assembly, PM School Crossing Ahead Pavement Markings, FBWA Flashing Beacon and School Crossing Ahead Warning AssemblyBack to article page