The Home Office has released Working Together to Protect Crowded Places for consultation.
It sets out how local authorities, businesses, the police and communities can work together to better secure 'crowded places' against the threat of terror attacks.
The accompanying Safer Places consultation supplement is a guide to designing counter-terrorism measures into new developments.
RTPI planning policy officer Rebecca Coates said: \"Designing out crime is already ingrained in the planning process. These documents supplement this while looking at potential terrorism threats in more detail.
\"Guidance must be proportionate to the likely risk. A risk assessment needs to done up front – perhaps through the Local Development Framework - alongside the range of other design issues.
\"Care should also be taken to ensure it doesn't conflict with other current guidance out there such as CABE's design review process.\"