Omnitrans drivers who were on the job during the memorial on Monday stopped their buses at 11 a.m. for a moment of silence to honor their late colleague.
Kester had worked for the company for 15 years and had earned more than a dozen commendations for safety and customer service.
Kester was the father of eight, including six small children.
Donations may be made payable to the Kester Family Memorial Fund and mailed or delivered to any Bank of America branch location. Contributions can also be directed to Omnitrans headquarters at 1700 West Fifth St., San Bernardino, CA 92411.