Road safety 3D modeling

Road intersections survey and modeling for the design and evaluation of safety improvement measures / High risk locations all over Greece

Purpose

The project was assigned by the Maintenance Department of the Greek Ministry of Infrastructures, Transports and Networks in order to improve safety for high accident risk locations (mainly road junctions) all over the Greek road network and, in particular, to design and evaluate through video simulations the appropriate improvement interventions for these locations.

Project tasks

• Selection of “high accident occurrence – reduced safety” locations by the Maintenance Department.
• Laser scanning survey, using the Optech ILRIS 3D Laser Scanner, of the road intersection area for each location.
• Alignment and georeference of the pointclouds.
• Vector drawings and orthophotos created as background for design purposes.
• Design of safety improvement interventions: additional lanes, vertical and horizontal signage, changes in traffic regulation, closure of secondary roads, etc.
• Vertical signage modeling for 3D video simulations.
• Creation of the “as designed” total 3D model.
• Video fly-through and driving simulations created and evaluated by the Maintenance Department and Local Authorities.

Results – Conclusions

Laser scanning has proven to be not only a fast data capture tool to provide accurate and complete survey background data for road design purposes, but also an easy and efficient way of creating “before / existing” and “after / as designed” colored video fly-through and driving simulations to easily compare and evaluate the efficiency of designed – proposed interventions, before their actual implementation.

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Working on a road safety audit or infrastructure survey project? We would be glad to discuss how 3D laser scanning and modeling can support your design process. Contact us or explore our services.