Transportation safety and environment

Year	# Articles
2021	1

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

2 (2020)	?	4	?	1
3 (2021)	1	3	1	6
4 (2022)	4	2	5	3
5 (2023)	5	4	4	4
6 (2024)	7	?	?	?