Historic Environment Scotland say:
"We are aware that Holyrood Park is an important green space for many people in Edinburgh, particularly at weekends. We have been monitoring usage of the Park and have taken the decision to trial Saturday daytime road closures, in addition to Sunday daytime road closures.
This will come into effect from Saturday 13 June, with all roads in Holyrood Park closed to vehicles from 8.30am and re-opened for 6pm on both Saturdays and Sundays.
The High Road and car parks, except for Broad Pavement car park, will remain closed every day. There is a one-way system in place for cyclists using the High Road."