Roundabouts

Roundabouts offer a proven way to improve safety while keeping traffic moving smoothly. DLZ helps communities plan and design modern roundabouts that reduce congestion and crashes, lower crash severity, and fit seamlessly within their surroundings. Our work spans everything from initial feasibility through final design, with the technical depth to handle single-lane intersections and complex multi-lane configurations alike.

Getting a roundabout right takes more than a good layout. Our process addresses operational performance, pedestrian accessibility, geometric precision, and driver clarity. Our roundabout designs meet modern standards while promoting safe movement of traffic.

Featured Capabilities

Feasibility Study

Feasibility studies evaluate whether a roundabout is an appropriate solution based on traffic conditions, site constraints, and community context. Early analysis helps inform decision-making and sets a clear path forward for design and implementation.

Safety & Capacity Analysis

Safety and capacity analyses assess how a roundabout will perform under existing and future traffic conditions. These evaluations help confirm operational efficiency while identifying opportunities to reduce crashes and improve overall performance.

Multi-Lane Design

Multi-lane roundabout design addresses higher traffic volumes and complex movement patterns. DLZ provides clear lane guidance, signing, and striping to support safe navigation and reduce driver confusion.

PROWAG Compliance

PROWAG compliance is integrated into roundabout design to support safe and accessible travel for pedestrians with disabilities. Features such as accessible crossings and detectable warnings help create inclusive intersections for all users.

Raised Crosswalks

Raised crosswalks enhance pedestrian visibility and encourage slower vehicle speeds at roundabouts. These elements improve safety while reinforcing pedestrian priority at crossing locations.

Geometric Reviews

Geometric reviews to confirm roundabout layouts support safe vehicle movements, appropriate speeds, and clear user guidance. DLZ’s attention to geometry helps accommodate all users while meeting design standards.

Related Work

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some of our roundabouts experts.