03145nam a2200373 4500 20260817162449.0 251197 th eng .b10082621 AIT Thesis no. 219 Supoje Hualthanom Analysis of the effect of duration of exposure on glance legibility of Thai-character highway signs Bangkok : Asian Institute of Technology, 1968 68 p. Thesis ; no. 219 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand. Thesis (M.Eng.) - Asian Institute of Technology, 1968 The objective of this study was to determine the relationship between the duration of glance exposure and the projected height of Thai characters used for highway place-name signs. Glance legibility of signs was measured from slides projected onto a screen at 7.5meters prospection distance. Six values of exposure (5, 2, 0.5, 0.2, 0.1, and 0.04 sec) were employed, and 30 subjects were tested under simulated driving conditions. The 30 place-name signs were classified into three groups, having high, moderate, or low levels of legibility in accordance with the consistency of their legibility at various durations of exposure. The results were stated as a regression equation for each group of signs, the regression line relating projected height of characters to the duration of exposure. From the group of signs which gave consistently high legibility, the results led to determination of the most legible design of Thai characters by evaluation of the width/height and character-spacing/height ratios. An attempt was made to study the amount of learning in recognition of place names. The six runs of the slides of signs exposed for the present study were compared with the findings of an earlier experimenter in which a particular group of subjects viewed a set of the slides only once. The effect of familiarity with the signs was statistically analyzed by finding the linear relationship and the degree of correlation between these two independent, but generally similar, sets of data. Traffic signs and signals Thailand Jones, John Hugh, Chairpeson Chai Muktabhant, Examination Committee Subin Pinkayan, Examination Committee Asian Institute of Technology. Thesis ; no. 219 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B24609 .b10082621 mnait v 260626 3 951012 m a v 0 mnait mnarc 20 40 Barcode : 30050004934658 CREATED : 1994-05-16 RECORD # : i1008504x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160114046 CREATED : 2016-07-04 RECORD # : i1292927x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 5111 5111 0 0 0 0 MAIN MAIN mnait 2026-08-17 10.00 0 AIT Thesis no. 219 30050004934658 2026-08-17 16:24:49 1 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no. 219 30050160114046 2026-08-17 16:24:49 2026-08-17 40