Barrierless

The world is increasingly barrierless.

High Mill crossing, at present gated and manually-operated, will become a barrierless rural-type crossing.

In Burneside in the Lake District on July 29, an incident took place at a barrierless level crossing on the Windermere branch that has been described by senior railway staff as one of the closest near misses they've ever seen.

The reaction is then barrierless, ie, ΔG* = 0, and the rate constant is a maximum for the given λ (Figure 6).