CMF / CRF Details
CMF ID: 2430
Construct gateway monument (on state-owned road)
Description: Gateway monuments are free-standing roadside structures or signage that communicate the name of a city or township to motorists.
Prior Condition: No Prior Condition(s)
Category: Roadside
Study: Safety Impact of Gateway Monuments, Ye and Veneziano, 2010
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 110 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.68 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.15 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 32 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 15.5 |
| Applicability | |
|---|---|
| Crash Type: | All |
| Crash Severity: | All |
| Roadway Types: | All |
| Street Type: | |
| Minimum Number of Lanes: | 1 |
| Maximum Number of Lanes: | 4 |
| Number of Lanes Direction: | |
| Number of Lanes Comment: | |
| Crash Weather: | Not specified |
| Road Division Type: | All |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | All |
| Traffic Volume: | Minimum of 3300 to Maximum of 34000 Annual Average Daily Traffic (AADT) |
| Average Traffic Volume: | |
| Time of Day: | All |
| If countermeasure is intersection-based | |
| Intersection Type: | |
| Intersection Geometry: | |
| Traffic Control: | |
| Major Road Traffic Volume: | |
| Minor Road Traffic Volume: | |
| Average Major Road Volume : | |
| Average Minor Road Volume : | |
| Development Details | |
|---|---|
| Date Range of Data Used: | 1998 to 2008 |
| Municipality: | Willow Creek, Rocklin, Nevada County, Paso Robles, Tehachapi |
| State: | CA |
| Country: | |
| Type of Methodology Used: | Before/after using empirical Bayes or full Bayes |
| Sample Size (crashes): | 36 crashes before, 35 crashes after |
| Other Details | |
|---|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Jan 01, 1970 |
| Comments: | |
