The A458 Trunk Road (East of Mallwyd, Gwynedd) (Temporary Speed Restrictions & No Overtaking) Order 2014
2014年A458主干道（格温内德马利威德以东）（临时限速及禁止超车）令

The A458 Trunk Road (Mallwyd to Nant yr Ehedydd, Gwynedd) (Temporary Traffic Prohibitions & Restrictions) Order 2020
《2020年A458干线公路（马利威德至南特耶德德 格温内德）（临时交通禁止及限制）令》

The A458 Trunk Road (East of Mallwyd, Gwynedd) (Temporary 30 mph Speed Limit & No Overtaking) Order 2017
2017年A458主干道（格温内德马勒维德以东）（临时限速30英里\/小时 禁止超车）法令

The A458 Trunk Road (Nant yr Ehedydd, Mallwyd, Gwynedd) (Temporary Traffic Restriction & Prohibitions) Order 2012
《2012年A458干线公路（南特-伊赫德德德、马勒威德、格温内德）（临时交通限制及禁止）令》

The A458 Trunk Road (Various Locations between Mallwyd, Gwynedd and Welshpool, Powys) (Temporary Traffic Restrictions & Prohibition) Order 2012
2012年A458主干道（位于Mallwyd、Gwynedd和Welspool、Powys之间的不同位置）（临时交通限制和禁止）令