If Phase I solutions are proving ineffective after having been in place for 1 to 2 years, more restrictive traffic calming devices may be considered in Phase II. Traffic studies conducted before and after implementation of Phase I is reviewed to determine what Phase II traffic calming measure may work best. Here are some possible Phase II solutions:
- curb extensions
- speed humps
- landscaped medians
- entry treatments
- traffic circles
Traffic calming is a design treatment or combination of measures intended to slow down and/or reduce motor vehicle traffic.
While helping to reduce speeds, physical devices such as entry treatments, landscaped medians, and landscaped traffic circles can also enhance the character and value of the neighborhood.
Each physical traffic-calming device is unique. Specific criteria must be met for installation of physical devices. Installation is determined by traffic engineering analysis with emphasis placed on three main factors:
- traffic volume
- 85th percentile speed
- area topography
Based on the data collected and the topography of the area, a device or combination of devices may be recommended. Of course, any recommended action will be based on sound engineering and planning principles. Safety remains paramount in the decision-making process, including consideration of emergency response by police, fire, and paramedic crews.
Should a location proceed to Phase II, a neighborhood survey is conducted and/or a neighborhood meeting is held to discuss the traffic calming improvements and to obtain neighborhood support. A majority support of 70% is required to proceed with construction of a traffic calming measure.