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TRAFFIC SIGNAL 
OPERATIONS SPECIALIST® (TSOS)

 

Exam Format and Content

The exam is a 3 hour session.

The TSOS certification examination will include an assessment of knowledge in the areas of: 

Subject Domain/Sub-Domain Number of Questions
Principles of Signals and Signal Systems 19

Signal control and functionality

4

Types of signals 

2

Supporting hardware devices and subsystems

2

Signal coordination and progression  

3

System types 

1

Special user needs 

1

Design standards 

4
Traffic flow theory 2
Elements of Signal Design and Implementation 20

Signal phasing and geometrics

4

Preemption and priority

2

Pavement markings and signing

4

Detectors 

2

Signal head, cabinet and pole placement

3

Temporary traffic control and equipment switch over

3
Initial turn-on and timing adjustments 2
Signal Timing 26

Clearance intervals

6

Isolated signal timing

2

Coordinated signal timing

4

Data collection procedures

2

Performance measures

2

Software and analysis

2

Field implementation

3

Systems control 

2
Documentation 3
Signal Operations and Safety Reviews 35

Safety audit

6

Scheduled field reviews 

4

Receipt of and response to public inquiries

6

Responsive field reviews 

6

Reevaluation of phasing and timing

6

Signal removal or modification

4
Asset management and documentation 3

 


Transportation Professional Certification Board Inc.
1627 Eye Street, NW, Suite 600, Washington, DC 20006 USA
Telephone: 202-785-0060 | Fax: 202-785-0609
E-mail: certification@ite.org
©2012 Transportation Professional Certification Board Inc.