signalless en · ADJ
Etymology
From signal + -less.
Meanings
-
(not-comparable) Without any signals.
At 6 p.m. the train left and ran quickly across the north-east corner of Syria, with few stops on this isolated 40-mile stretch of signalless railway.
1950 July, J. C. Mertens, “By the "Taurus Express" to Baghdad”, in Railway Magazine, page 439: