Citywide Traffic Engineering Design Services | On-Call Support Across Washington, DC

PSI has delivered rapid and effective solutions through this major ID/IQ contract
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Since 2012, PSI personnel have continuously supported the District Department of Transportation (DDOT) under a major citywide ID/IQ contract for on-call traffic engineering design services. Focused on improving safety, mobility, and multimodal access, PSI delivers rapid, effective solutions to address high-crash locations across Washington, DC.

Task orders under this contract include:

- Multimodal facility design and spot intersection improvements

- Comprehensive traffic studies, including MUTCD warrant analyses

- Traffic signal design, signal timing, and traffic calming measures

With fast turnaround times and deep technical expertise, PSI plays a key role in enhancing the efficiency and safety of the city’s transportation network.

At a Glance
Continuous on-call traffic engineering support for DDOT since 2012
Rapid, effective multimodal safety improvements at high-crash locations
Specializing in traffic studies, signal design, and intersection upgrades