Civil & Traffic Engineering Services

Services Built Around Project Approvals

Traffic Associates provides civil and traffic engineering reports, plans, and technical support for projects moving through planning, permitting, construction, and agency review.

Serving Los Angeles County and surrounding Southern California counties.

Practical Engineering Support From Scoping Through Submittal

Many clients come to us after receiving city comments, planning conditions, or permit requirements. We help identify the likely deliverable, prepare the appropriate report or plan, and support the project team through agency review.

Not sure what the city is asking for?

Send us the comment, project address, or plan set and we’ll help identify the right report or plan.

Defensible & City-Ready

Reports aligned with local agency review expectations.

Efficient Turnaround

Responsive timelines to keep your project moving.

Practical Scoping

Clear guidance on the report or analysis likely needed.

Development Reports & Transportation Studies

Clear, defensible analysis to help your project move through planning, entitlement, CEQA, permit review, and agency comments.

What you get

VMT screening letter, model run summary, assumptions, and supporting documentation.

Typical deliverables

Signed screening letter, technical appendix, and exhibits tailored to city requirements.

What you get

Trip generation calculations, ITE or locally supported assumptions, comparison tables, and narrative summary.

Typical deliverables

Trip generation memorandum or letter suitable for planning or transportation review.

What you get

Study scope, analysis assumptions, operational review, findings, and recommendations.

Typical deliverables

Traffic impact analysis report, technical appendices, figures, tables, and response support.

What you get

Site circulation review, queue estimates, operational observations/assumptions, and recommendations.

Typical deliverables

Queuing and circulation study, exhibit figures, site circulation diagrams, and agency-response documentation.

What you get

Parking supply review, code/agency comparison, parking demand estimates, and practical findings.

Typical deliverables

Parking assessment memo, summary tables, exhibits, and recommendations.

What you get

High-level transportation/circulation review, likely agency requirements, and early design considerations.

Typical deliverables

Feasibility memo, redline comments, site review summary, or preliminary transportation issues list.

Construction Traffic Control & Management

Plans and construction-phase support for public right-of-way work, site access, staging, pedestrian routing, and agency construction review.

What you get

Construction access review, haul/staging assumptions, circulation considerations, and agency-ready CTMP documentation.

Typical deliverables

Construction Traffic Management Plan, route exhibits, staging notes, and supporting narrative.

What you get

Temporary traffic control layout, signage/channelization, pedestrian routing, and work area protection concepts.

Typical deliverables

Traffic control plan sheets, notes, details, and agency comment responses.

What you get

Work zone phasing support, lane configuration planning, construction-stage traffic handling, and pedestrian/access review.

Typical deliverables

WTCP plan sheets, phasing sheets, signing/striping details, and comment responses.

What you get

Staging layout review, access considerations, and coordination with overall traffic control and site planning.

Typical deliverables

Staging plan exhibits, narrative summaries, or integration into a larger CTMP package.

What you get

Pedestrian detour planning, temporary crosswalk review, ADA accessibility checks, and barrier coordination.

Typical deliverables

Pedestrian routing plans, detour signage details, and barricade layouts integrated into TCPs.

Civil, Access & Site Design

Civil and traffic design support for site access, circulation, ADA accessibility, frontage improvements, and agency permitting.

What you get

Site access and circulation review, layout coordination, frontage considerations, and civil design input.

Typical deliverables

Site plan markups, civil/site design exhibits, agency response notes, and design support.

What you get

ADA access review, accessible route planning, curb ramp/parking/access coordination, and design support.

Typical deliverables

ADA design exhibits, accessibility notes, site plan markups, and improvement plans.

What you get

Code-compliant lane configurations, parking stall layouts, pavement marking details, and signage specifications.

Typical deliverables

Signing and striping plan sheets, construction details, and agency coordination.

What you get

Roadway geometry review, curb/gutter design coordination, alignment checks, and utility clearance planning.

Typical deliverables

Frontage improvement exhibits, street cross-sections, and integration with civil plan sets.

What you get

Vehicle turning templates (AutoTURN), sight distance review, and layout feedback for safe maneuvering.

Typical deliverables

Swept path exhibits, access review memos, and site plan redlines for the design team.

Agency Support & Review Assistance

Support for project teams responding to city comments, agency conditions, permit requirements, and technical review requests.

What you get

Comment review, likely deliverable identification, scope guidance, and next-step recommendations.

Typical deliverables

Comment response summary, proposal scope, agency-response language, or technical memo.

What you get

Initial study approach, scope assumptions, agency coordination support, and recommended analysis path.

Typical deliverables

Scoping memo, assumptions summary, methodology outline, or agency coordination support.

What you get

Point-by-point comment responses, technical justification, and coordinated revisions to keep the project moving.

Typical deliverables

Formal response letters, revised plans/reports, and supporting calculations for resubmittal.

What you get

Targeted analysis and documentation addressing the specific condition without over-scoping the work.

Typical deliverables

Compliance memos, technical exhibits, mitigation verification, and agency sign-off support.