Synchro Traffic Engineer for Arterial Corridors

Parsons; Saudi Arabia; On-site; SAR 180,000 - 240,000; Full time

Job summary

Parsons in Riyadh seeks a Traffic Engineer - Synchro Specialist to develop, calibrate, and apply Synchro/SimTraffic models for intersection and corridor improvements.

You will convert field data and signals information into reliable operational models, diagnose deficiencies, and test timing, phasing, and lane-use options before field implementation, collaborating with signal operations and design teams.

Qualifications

• Bachelor's degree in Civil Engineering, Transportation Engineering, Traffic Engineering, or a closely related discipline.
• 4+ years of traffic engineering experience with substantial hands-on use of Synchro and SimTraffic for intersection and corridor analysis.
• Demonstrated ability to build, calibrate, validate, and apply Synchro models using real field traffic data and existing signal timing information.
• Strong understanding of signalized intersection operations, phasing, timing, coordination, capacity analysis, saturation flow, queues, delay, and level-of-service concepts.

Responsibilities

• Develop Synchro models for signalized and unsignalized intersections and coordinated arterial corridors using approved traffic counts, roadway geometry, signal timing, and field-condition information.
• Review and code lane configurations, turn movements, saturation flows, heavy vehicles, grades, storage lengths, pedestrian phases, phasing sequences, timings, offsets, and other model parameters.
• Calibrate and validate models using observed queues, travel times, field saturation conditions, cycle observations, and other available operational evidence.
• Use Synchro and SimTraffic to identify operational deficiencies, bottlenecks, split failures, queue spillback, progression issues, capacity constraints, and potential network interactions.
• Develop and test alternative timing plans, phasing strategies, cycle lengths, splits, offsets, lane-use changes, turn restrictions, channelization, and minor geometric improvements.
• Optimize coordinated corridor timing plans to improve progression, reduce stops and delay, and manage queues across multiple intersections.
• Compare alternatives using measures of effectiveness such as delay, level of service, queues, stops, travel time, v/c ratio, throughput, and progression quality.
• Prepare clear before-and-after model summaries, exhibits, tables, timing sheets, and technical narratives supporting recommended improvements.
• Work with Traffic Signal Operations Engineers to convert approved model recommendations into implementable controller timing plans and field test strategies.
• Support development of quick-win and longer-term corridor improvement programs by quantifying expected operational benefits and identifying constraints needing further design.
• Maintain organized model files, version history, assumptions, input data, calibration notes, and model-review records.
• Conduct sensitivity testing where traffic demand, detector operation, signal control, or field conditions create uncertainty in expected results.
• Support traffic impact assessments, corridor studies, construction traffic analyses, and special-event planning where Synchro modeling is appropriate.
• Participate in technical reviews with senior traffic engineers and revise models based on quality-review comments and field verification.
• Contribute to standardized Synchro modeling procedures, templates, quality checks, and documentation practices for the project.

Skills

Traffic engineering

Synchro

SimTraffic

Model calibration

Data analysis

Education

Bachelor's degree in Civil Engineering or related field

Tools

Synchro

SimTraffic

Excel

PowerPoint

Word

Job description

Parsons in Riyadh seeks a Traffic Engineer - Synchro Specialist to develop, calibrate, and apply Synchro/SimTraffic models for intersection and corridor improvements.

You will convert field data and signals information into reliable operational models, diagnose deficiencies, and test timing, phasing, and lane-use options before field implementation, collaborating with signal operations and design teams.