Stylized Dallas skyline with intersecting freeways at dusk

Vehicular Queue Analysis

Managing queues at intersections, drive-throughs, school sites, and access points is critical for safety, operations, and access. DeShazo Group performs queue analyses using observed data and HCM-based/microsimulation methods to size turn bays & stacking, optimize signal timing, and prevent spillback across the network.

Proven North Texas Experience

Studies for signalized intersections, school dismissal, retail/restaurant drive-throughs, special events, hospital campuses, and construction detours—clear, buildable recommendations.

What We Do

Data Collection — turning counts, peak-hour observations, dwell time, percentile queues.
Methods — HCM 6/7; Synchro/SimTraffic or VISSIM for corridors and spillback.
Storage Design — turn-bay length, tapers, lane balance, access spacing, internal circulation.
Signal Timing — split/offset optimization, phasing revisions, clearance & coordination.
Schools & Special Uses — dismissal plans, staging, staffing, signage packages.
Documentation — graphics, exhibits, and City/TxDOT-ready submittals.

Technicians collecting turning counts and measuring queues

Why It Matters

Safety — fewer rear-ends and blocked crosswalks/driveways.
Mobility — prevents spillback that collapses corridor progression.
Access — right-sizes stacking for schools, clinics, retail, mixed-use sites.
Compliance — supports approvals with data-driven, code-aligned designs.

Cars queued in a dedicated lane, verifying storage and spillback

Example Projects

Private & Public Sector Experience

Signalized intersection turn-bay & spillback mitigation
School pick-up / dismissal queue plans (Dallas-area ISDs)
Retail & restaurant drive-through expansions and re-stripes
Hospital campus access and internal circulation
Event traffic & construction detour queue management

Dallas urban corridor—mixed-use streetscape context for queue studies

School Queue Planning

On-site stacking & staging plans to keep queues off public streets
Parent communication maps and staff post locations
Adaptive layouts for rain days, events, and construction phases

School pick-up queue and staging area—preventing overflow to public streets