Tsunamis usually range around 3-15 meters tall in the Pacific Ocean (source), and usually the water from the wave does not inundate the land more than 2 miles inland (source). Therefore, everyone living within 2 miles of the coast will need to be evacuated.
Since Peru has multiple universities and large buildings that are at least two
miles from the coast, it would be reasonable for all of the people that were
evacuated to meet in these safety spots such as sport stadiums like Estadio
Municipal, Teodoro Fernandez, and Nacional Jose Diaz, and universities like
Universidad Nacional and Universidad San Marcos. These meeting places are also
easy to indicate on signs because people already know of these locations.
See the link below for more stadiums.
from worldstadiums.com
The routes that will lead to these safety zones will be clearly marked with signs that depict the routes to travel to get to the closest evacuation site. These routes will be along the paved roadways for the cars, or the sidewalks/smaller streets for the pedestrians.
Since the evacuation site will be in a large stadium or university, shelter will already be provided. But if there are more people than the stadium or university can hold, as there most likely will be because of the large numbers of people we are evacuating near the coast, we will make sure that extra tents are provided so tents can be set up in the parking lots to accommodate everyone. Once the people reach the evacuation site, multiple computers will be at the site to login everyone in. There will also be supplies such as food, water, medical supplies, blankets, clothing etc. These supplies will be distributed to the people at the evacuation sites.
Once the people reach the central meeting site computers will be there to login each person. By having everyone sign in, the Peruvian government will be able to see who survived the tsunami by looking at the records of the people in the evacuation sites. Even if everyone who survives does not go to an evacuation site, it will give the government a good estimate of survivors. The login records will also be posted online and updated approximately every hour so that people can check for the names of family members and friends.
Past the initial perimeter of 2 miles along the coast, safety zones will be set up so that each of these zones will be able to support around 20,000 people each. Because there is going to be a large number of people at these sites, the computers will be useful to see who is there and they will save people the agonizing task of searching through a large crowd of people for their family and friends.