Jerry Sheng, Junrun Chen, Christian CayabyabUniversity of California, Berkeley – GEOG C188

Acknowledgments:-This poster template was created by the Medical Illustration Unit, Prince of Wales Hospital,University of New South Wales, Sydney, Australia and edited for the use of this project.

-LA Streets Data & LA County DEM Data were provided by Professor John Radke

Data Sources:-Los Angeles County GIS Data Portal (GIS Data for LA County)

-GeoHub – The City of LA

-State of California GeoPortal

-Department of City Planning (City of Los Angeles)

-30 Years Pacific Institute

ConclusionThe city of Los Angeles has clear areas that we believe can be optimal

for host a protesting demonstration. Zones in the Northern part of Los Angelesinclude the Chatsworth, Reseda, Granada Hills, and Pacoima communities.There is also a zone below the middle (of the North and South) of the map and inthe easternmost section from Mid-Wilshire to Lincoln Heights and from SilverLake to top of South and Southeast Los Angeles.

We believe that overall, Los Angeles is a good place to hold politicaldemonstrations. We believe this not only because we found many areas thatwere excellent fits considering our constraint and opportunity factors, but alsobecause there were not many red to orange zones. This means that while someplaces are very fitting to hold a protest, a majority are neutral to acceptable,which can give more possible location choices to Law Enforcement and officials.

Contact:

Jerry Sheng: jerrys92@berkeley.edu

Christian Cayabyab: ccayabyab@berkeley.edu

Buzz Chen: chenjunrun@berkeley.edu

Theory and Method- Suitability

- Constraints

- Crimes: Avoid regions where there is potential for crime thatmight cause harmful violence while protesting.

- Schools – Avoid school areas where children may be in dangerif violence outbreaks during the demonstration.

- Population Less than 3000: Protests will not be significant andinfluential if few people attend and are reached.

- Opportunities

- Police Station with Responding Time in 3 Minutes： In case ofcriminal or violent incidents during protests, police canrespond quickly to prevent a situation from worsening.

- Hospitals with Responding Time in 3 Minutes: In case peopleget seriously to life-threateningly injured, emergency responsecan promptly be on the scene, which could save a life inextreme scenarios.

- Existing Parks: Parks are normally open spaces where peoplecan have easy access to joining protests. Open spaces can beeasily supervised and controlled because there are noobstructions like buildings or busy roads to impede lawenforcement.

- Network Analysis

We conducted a network analysis using polygon to point to makecentroids of the small areas we found to have the highest opportunityweight from our suitability analysis. We did this to not only allow ourselvesto visualize the routes that emergency services should travel, but also toshow the City of Los Angeles’s police and medical professionals andreceive feedback on if these proposed routes are logistically sound. Thesuitability analysis used network analyses as factors and this secondarynetwork analysis on the the resulting points gives us visible routes.

- 3D Analysis

We did a 3D analysis to see if any of our proposed locations had asignificant slope that would make a walking protest physically tiring forparticipants. We found Los Angeles County DEM data in a collectionProfessor Radke shared.

IntroductionSince the 45th president took office in January, the

number of protests in the United States (especially on theWest Coast) has increased considerably. Many timesthese protests have spurred incidents of violence,prompting officials at every level to look into safetysolutions and precautions. Systematic security andprevention planning for these demonstrations is quicklybecoming an invaluable asset in addressing theseconcerns.

As the nation’s second largest city, Los Angeles willinevitably have protests and inevitably, some of them willturn non-peaceful. Thus, our group aims to find the mostappropriate location to assign protests for the City of LosAngeles. The project is designed realistically.

Results

• Service Area Network Analysis (Generate Opportunity Factors):We used service area to produce two opportunity factors: one usingpolice stations and the other using hospitals, each with a responding timeof at most 3 minutes. Responding .

The Most Appropriate Locations in Los Angeles to Host a Protest with Special

Emphasis on Safety

• Closest Facility Network Analysis for Protesting and ResponseRoutes (built upon suitability map):

Finding the closest routes from police offices and hospitals tothe most suitable and potential protesting locations can help thepolices and medical staff locate the best emergency response routesand alternative routes to the locations.

• 3D Slope Analysis

Opportunity 1: Police Stations – Service Area of Network Analysis for Travel Time (weight +3)

Opportunity 2: Hospitals – Service Area of Network Analysis for Travel Time

(weight +2)

Suitability Map

Network Analysis For Routes

3D Slope

Method & Flowchart