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ChatGPT-generated script to find the arrival time of a train at a given station in Portland, OR
#!/usr/bin/env ruby
require 'net/http'
require 'json'
require 'time'
# Replace with your TriMet API key
API_KEY = '73E10D534D59A179A687B98EDEE'
# Replace with the TriMet stop ID for the stop you're interested in
STOP_ID = '13136'
# Construct the API endpoint URL
url = URI.parse("{STOP_ID}&appID=#{API_KEY}")
# Make an HTTP GET request to the API endpoint
http =, url.port)
http.use_ssl = true
request =
response = http.request(request)
# Parse the JSON response
data = JSON.parse(response.body)
# Extract relevant information from the response
if data['errorMessage']
puts "Error: #{data['errorMessage']}"
stop_name = data['resultSet']['location'][0]['desc']
arrivals = data['resultSet']['arrival']
puts "Train times for #{stop_name}:"
arrivals.each do |arrival|
route = arrival['route']
short_sign = arrival['shortSign']
estimated_time_ms = arrival['estimated']
estimated_time = / 1000.0).strftime('%Y-%m-%d %H:%M:%S.%L')
status = arrival['status']
puts "Route #{route} - #{short_sign}: #{estimated_time} (#{status})"
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