Liverpool, merseyflow, and I’m a long way from alone - there’s one sign, a website (merseyflow.co.uk) with major availability and usability issues, and they charge a toll on both the old (used to be toll free) and new bridges.

The first month of operation generated £1M of revenue from fines alone. https://www.google.co.uk/amp/www.liverpoolecho.co.uk/news/li...

The same article asserts a revenue of £50m+/yr from fines for dartford - same administering firm. With toll barriers this revenue would have been zero.

Looks pretty strategic to me.