The Traffic Division designs, operates, and maintains traffic control devices on public roads in unincorporated Pierce County (except State highways).

Our primary areas of responsibility:

• Traffic Signs
• Signals and Lighting
• Pavement Markings (e.g. striping, crosswalks)
• Traffic Studies
• Traffic Data Collection
• Traffic Impact of Development
• Speed Limits
• Road Classification

On our pages you will see many references to the MUTCD--a federal publication that Washington State has adopted as our standard. Traffic control devices include signal lights, traffic signs, and paint markings. The MUTCD covers all aspects of the placement, construction, and maintenance of every form of approved traffic control.

The manual provides five basic requirements for all traffic control devices. Devices must:

• Fulfill a need.
• Command attention.
• Convey a clear, simple meaning.
• Command respect of road users.
• Give adequate time for proper response.

The MUTCD emphasizes 'uniformity' of traffic control devices. A uniform device conforms to the regulations for dimensions, color, wording, and graphics. The standard devices should convey the same meaning at all times. Consistent use of traffic control devices protects the clarity of their messages. As stated in the MUTCD, 'uniformity' must also mean treating similar situations in the same way.