Traffic Impact Report in the City of Los Angeles

Do you want to get the most accurate traffic report? Get an insight into the impact criteria & key methodologies for substantially increasing hazards due to geometric design features or incompatible use. let's highlight the impact criteria:

What should you learn about impact criteria in a traffic study in Los Angeles?

Will a project substantially increase any hazard owing to the geometric design feature or any incompatible uses? The preliminary project access plans can be reviewed for traffic engineering design standards to determine whether the deficiencies in a site plan might be considered significant. Its determination might be on a case-by-case basis that considers the given factors:

• The pedestrian activity's relative amount at any project access point
• Design features or physical configurations that a project introduces affecting the pedestrians' and bicyclists' visibility to drivers exiting or entering the site alongside the visibility of vehicles of bicyclists and pedestrians
• Any bicycle facilities in a project driveway may cross the level of utilization
• Any surrounding area or site's physical conditions, such as slopes, curves, landscaping, walks, or barriers that may lead to pedestrian or vehicle, bicycle/vehicle, or vehicle or vehicle safety hazards
• The project changes or location to the public right-of-way relative to proximity to a Safe Routes or High Injury Network to School program area
• Any other conditions, such as approximate location incompatible uses, that may increase the transportation hazard substantially

If you wish to evaluate the potential vehicle-to-vehicle impacts that result in unsafe queues from the freeway off-ramp, projects expected to include more than or equal to 25 trips to the off-ramp in either morning or afternoon peak hour, the ramp must be studied. So, you need to follow the given points:

• Use of Synchro analysis software or tools to study for any "Future with Project" conditions for proposed projects' build-out year.
• To evaluate the existing & future storage lengths' adequacy, one should use the 95th percentile queue offered by the Synchro results worksheet. It is also imperative to use around 100% of the storage length on every lane of the ramp. When an Auxiliary Lane exists, one should include 50% of the auxiliary lane's length to that ramp storage area

If project traffic is expected to add to the queue that extends onto a freeway mainline by less than two vehicle lengths, that project may not have a significant safety impact. When the queue is extending or projected to an extent onto a freeway mainline, and that project increases the overflow onto the lanes by two car lengths, a project may cause an insignificant safety impact.

Now, when a project includes more than one length to a ramp back up extending to a freeway mainline, the location should be tested for the safety issues. Surprisingly, it should include the test for speed differential between the mainline and off-ramp queue of a freeway during any particular peak hour.

The overall speed differential may identify the freeway mainline lanes' operating speed during a peak hour corresponding to a peak hour during which a ramp may experience project-related queue overflow.

PeMS or Caltrans Performance Measurement System data can be valuable as it helps in identifying the freeway operating speed during a peak hour. When reliable PeMS data isn't available at the location, other speed data sources, including the location-based services data, may be useful. There might be a potential safety issue when the speed differential is around 30 mph.

Want to get an accurate and effective traffic assessment report? Get in touch with Armen Hovanessian Transportation Consulting. The company can offer an in-depth consultation about the traffic assessment reports before preparing them for you in the city of Los Angeles. Experienced traffic engineers in the company prepare the reports with utmost accuracy.