A full list of prohibited and restricted areas around the Mountain Course has been published.
A complete review of the Mountain Course has taken place following the three deaths at the 26th Milestone during last year's Senior Race, and the subsequent inquest.
Officials say regular visitors will find only a few changes compared to last year, but the new signage makes it much clearer where is out-of-bounds.
Local company ACUE Limited has been contracted to mark and sign all the prohibited and restricted areas.
All Chief and Deputy Sector Marshals will undergo training to continously monitor the areas over T.T. fortnight, with the Police available to support as and when required.
The full list of prohibited and restricted areas is available via the official website www.iomtt.com