Public roads

Articles in SafetyLit
Y-Axis = Volume :: X-Axis = Issue
?=unknown status :: X=no issue published :: nn=articles from issue :: A=relevant article(s) IDed to add
S=searched, nothing relevant :: O=issue published but not yet searched :: C=combination issue

	1	2	3	4	5	6

51 (1987)	?	1	?	?	?	?
63 (2000)	?	?	?	1	?	?
64 (2000)	?	?	1	?	?	?
70 (2006)	1	2	?	?	?	?
70 (2007)	?	?	?	?	1	?
71 (2007)	1	?	?	?	?	?
73 (2009)	1	?	?	?	?	?
74 (2010)	1	1	?	?	?	?
79 (2016)	?	?	?	?	?	1
86 (2023)	?	?	?	1	?	?