Just what difference do you think it makes, pink1?
Well l let’s work it out. If the stretch at the 30 limit was a mile long and you managed to keep to 30 for its entire length, it would take you two minutes. If the limit was increased to 40 and you kept to 40 for its entire length it would take you ninety seconds. So travelling at the lower speed would cost you an additional thirty seconds of your precious time.
Bearing in mind you do not seem to know quite why the limit was so drastically and unfairly reduced, do you really think it is worth worrying about?