Road safety engineering

Policy and procedures guides

Policies, procedures and documents relating to safety engineering on the roads network.

• Road safety engineering procedures RSPPG E027
• Dimension, location and spacing of road humps RSPPG E045
• Setting local speed limits in Northern Ireland RSPPG E051
• Road safety at schools RSPPG E070

Director of engineering memorandums

Memorandums relating to safety engineering on the roads network.

• Application of GG119 Road Safety Audit in Northern Ireland - DEM 098/25
• Cycling Design Guidance - DEM 181/22
• Motorcycling Design Guidance DEM 092/23
• Part-time 20mph Speed Limits at Schools – Tranche 3 2025/26 DEM 194/25
• Permanent Sub-surface Cross Pavement Channels for EV Charging DEM 195/25
• Pilot mandatory 20mph speed limits without traffic calming measures DEM 120/09
• The use of maximum speed limit road markings DEM 052/03
• Walking Infrastructure Design Guidance DEM 183/20
• School Keep Clear DEM 188/21
• Speed Indicator Devices (SIDs) DEM 191/23