Please choose your membership level you wish to sign up for. This is available for Individual, Agency or Sustaining membership. During the signup process, you will have the opportunity to opt-in to be listed in the directory online. You may also include a photo of yourself. Once you complete the application process, you will receive an email upon approval.
Payment Information:
If you want to pay for your membership with CASH or CHECK, choose the "Invoice Me" option. Mail a copy of the Invoice along with your payment to the CASTO Treasurer. Once the CASTO Treasurer has received your payment, your membership will be activated. You will be informed via email once this has occurred.
Chapter Assignments
Chapter 1
Riverside County
Chapter 2
Orange County
Chapter 3
Imperial County
San Diego County
Chapter 4
Los Angeles County
Ventura County
Chapter 6
Alpine County
Amador County
Butte County
Colusa County
El Dorado County
Glenn County
Nevada County
Placer County
Plumas County
Sacramento County
Sierra County
Sutter County
Yolo County
Chapter 7
Alameda County
San Francisco County
San Mateo County
Santa Clara County
Chapter 8
Fresno County
Madera County
Mariposa County
Merced County
Mono County
Chapter 9
San Luis Obispo County
Santa Barbara County
Chapter 10
Contra Costa County
Napa County
Solano County
Chapter 12
Kern County
Chapter 13
Lake County
Marin County
Mendocino County
Sonoma County
Chapter 14
Inyo County
Kings County
Tulare County
Chapter 15
Calaveras County
San Joaquin County
Stanislaus County
Tuolumne County
Chapter 17
Lassen County
Modoc County
Shasta County
Siskiyou County
Tehama County
Trinity County
Chapter 18
Del Norte County
Humboldt County
Chapter 19
Monterey County
San Benito County
Santa Cruz County
Chapter 20
San Bernadino County (High Desert)
Membership Levels
Official Members
Transportation Director/Supervisor
Maintenance Supervisor/Foreman
Dispatcher/Scheduler
Instructor/Trainer
Head Driver/Leadman
CHP Officer/State Representative
Professional / Associate Members:
Bus Driver
Mechanic
Secretary
Manufacturer/Sales Representative/Consultant
School Official/PTA
Persons Interested in School Transportation Safety
Retired Members
Sustaining Members
Bus Manufacturers/Dealerships
Vehicle Parts/Services Companies
Technology/Software/Routing Companies
Fuel Companies
Safety & Training Companies
Other Pupil Transportation Industry Specific Companies