Determination of Effects
The City's General Plan recommends maintaining a Level of Service (LOS) standard of LOS C. Intersections forecasted to operate below this standard (i.e., worse than LOS C) are identified as cumulatively deficient.
To determine deficient intersections, a comparison of LOS without and with project traffic is conducted for each analysis year. An intersection is considered affected if project traffic increases the average delay by more than the thresholds specified below:
Thresholds of Significant Impact
| With Project LOS | Significant Impact Threshold (seconds) |
|---|---|
| A/B | 10.0 |
| C | 8.0 |
| D | 5.0 |
| E | 3.0 |
| F | 1.0 |
Note: The thresholds for LOS A, B, and C do not apply to projects consistent with the General Plan.
9.0 Circulation Improvements
9.1 General Circulation Improvements
The City’s General Plan recommends a LOS standard of LOS C. Circulation improvements should be recommended for all analysis locations where this LOS standard is not met. Only feasible improvements should be proposed, and any improvements deemed infeasible must be discussed, along with the factors causing infeasibility, in the TIA. Funding mechanisms for all identified circulation improvements must also be included.
9.2 Intersection Improvements
For locations where a project impacts a deficient intersection, improvements must be identified to offset the project's effects. It is the project's responsibility to ensure intersections operate at an acceptable LOS. Project fair share costs should be calculated. If improvements are part of a fee program, the cost of implementing these improvements may be credited against fees payable by the project.
9.3 Improvement Fair-share Cost Calculations
The fair-share percentage for the project at each location is calculated using the total trips generated by the project divided by the total "new" traffic, which includes net increases from all proposed projects and growth, using the following formula:
\text{Fair share %} = \left( \frac{\text{Project Trips}}{\text{Project Trips} + \text{Future Development Trips}} \right) \times 100\%
Trips should correspond to the peak hour where the impact occurs for intersections or daily trips for roadway segment impacts. If impacts occur during both peak hours, the analysis should identify the peak hour with the highest project burden for fair-share assessment.
Prior to the issuance of building permits, the Project Applicant/Owner must participate in the City's Development Impact Fee (DIF) program by paying the required DIF fee at the time of the building permit or as agreed upon by the City and Project Applicant/Owner for improvements not included in a pre-existing fee program.
Improvement costs should be estimated using verifiable cost estimates from reliable and recognized sources such as the CMP guidelines. The fair-share cost of improvements is calculated by multiplying the fair-share percentage by the total estimated cost of mitigation.
9.4 Traffic Signal Warrant Analysis
Intersections where traffic signals are proposed as improvements must be evaluated for traffic signal warrants based on the California MUTCD for peak hour signal warrants unless data suggests other warrants may be applicable. The warrants analysis should be included in the study appendices.
Our Services are available throughout Fontana city in San Bernardino County with Zipcode 92337