Traffic Engineer - Synchro Specialist

Traffic Engineer
- Synchro Specialist Job Snapshot Role:
Traffic Engineer
- Synchro Specialist

Location:

Riyadh, Saudi Arabia Industry: Civil Engineering Function:
Civil & Structural Engineering

Experience:

Minimum 4 years Job Type: Full Time

Parsons is seeking a Traffic Engineer
- Synchro Specialist in Riyadh, Saudi Arabia to develop, calibrate, validate, and apply Synchro and Sim Traffic traffic operations models for intersection and corridor improvement initiatives. The role will transform field traffic data, roadway geometry, and existing signal information into reliable operational models used to assess deficiencies and compare potential improvements before field implementation. Working with traffic engineering, signal operations, roadway design, corridor assessment, and field teams, the Traffic Engineer will evaluate signal timing, phasing, coordination, lane use, geometric modifications, and other operational strategies designed to improve traffic flow across Riyadh 's urban road network.

Job Details Country:
Saudi Arabia City:
Riyadh Industry: Civil Engineering Function:
Civil & Structural Engineering Salary:
Not disclosed Gender: No Preference Candidate Nationality:
Not specified Job Type: Full Time Work Arrangement:
On-site

• Develop Synchro models for signalized and unsignalized intersections and coordinated arterial corridors.
• Build models using approved traffic counts, roadway geometry, signal timing information, and observed field conditions.
• Code lane configurations, turning movements, saturation flows, heavy vehicle inputs, grades, and storage lengths.
• Model pedestrian phases, signal phasing sequences, timings, offsets, and other relevant operational parameters.
• Calibrate and validate models using observed queues, travel times, saturation conditions, cycle observations, and other available field evidence.
• Maintain disciplined assumptions and quality checks throughout model development and calibration.
• Keep organized model files, version histories, input data, calibration notes, assumptions, and review records.

• The Traffic Engineer will use Synchro and Sim Traffic to diagnose existing traffic conditions and identify operational deficiencies affecting intersections and corridors.
• Analyze bottlenecks, split failures, queue spillback, progression problems, and capacity constraints.
• Assess potential interactions between adjacent intersections and corridor operations.
• Develop and test alternative signal timing plans and phasing strategies.
• Evaluate cycle lengths, splits, offsets, and coordinated signal operations.
• Assess lane-use modifications, turn restrictions, channelization, and minor geometric improvements.
• Optimize coordinated corridor timing to improve traffic progression.
• Evaluate strategies intended to reduce stops and delays and improve queue management across multiple intersections.
• Conduct sensitivity testing where demand, detector operation, signal control, or field conditions create uncertainty.

• Compare improvement alternatives using appropriate measures of effectiveness.
• Evaluate delay, level of service, queues, stops, travel time, volume-to-capacity ratios, throughput, and progression quality.
• Quantify expected operational benefits of proposed corridor improvements.
• Identify constraints that may require additional design or investigation.
• Prepare clear before-and-after model comparisons.
• Develop technical exhibits, tables, timing sheets, and supporting narratives.
• Document analytical findings and recommended improvements for technical review.

• Work with Traffic Signal Operations Engineers to convert approved modeling recommendations into implementable…