Direct Design
Ourston prides itself in having the best geometricians in the business. Why is geometric design so important? Effective geometry can:
- Reduce vehicle delay
- Increase capacity of the roundabout
- Promote traffic ergonomics (positive guidance)
- Promote pedestrian safety
- Reduce intersection speeds
Roundabout design is an iterative process that involves tradeoffs between safety and capacity. Achieving a balanced design where capacity, safety and minimal cost are optimized is what makes roundabout design complex. Modern roundabout design practice requires a heuristic principle-based approach that recognizes the holistic nature of the way roundabouts should be designed to achieve safe and efficient operations. Understanding the trade-offs of setting priorities among competing objectives of cost, safety and capacity in design is necessary to achieve an optimal balanced design.
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