Interesting input from Londondrz, who could well know more than most on this.

But which parts of MM are one-way is not that clear cut.
While Davids Rd is formally one-way, there are no markings to stop ambulances turning up Manor Mt from the restocking station. I don't think we should be restricting their options either.

The controversy though is the one-way at the top of MM, and that it was introduced mainly because of a high volume of accidents is new information. Does anyone have any figures on the number and the severity of these accidents?

There are lots of steep hills around here but the vast majority are not one-ways.