Rumor has it that Vekoma licensed Arrow's track. And for years, Vekoma just used Arrow's trains. Since they were using Arrow trains, it made sense that their track should be compatible.
If you look closely, there is a subtle difference between older Arrow track and Vekoma track: the Vekoma track has two bolts in the outboard edge of the rail where the segments join together.
--Dave Althoff, Jr.
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