Dispatch System

TSS Paratransit (formerly TSS Wireless) is a Glendale Company that began its work in transportation by developing a reporting package called ATBOS (Automated Transportation Back Office System) for one of our sister companies.

ATBOS incorporated the power of global positioning and GIS technologies to bring integrity to the business of accounting for taxi trips. Soon thereafter it was adapted to incorporate the requirements for reporting trip information for Access Services Inc. (ASI) the Consolidated Transportation Services Agency (CTSA) for Los Angeles County and the operator, through contractors, of all ADA paratransit service in Los Angeles County.

We have had over ten years of positive experience working with ATBOS and the team at TSS Paratransit.

ATBOS was further enhanced over the years to incorporate user friendly mapping and analysis tools to allow transportation managers at ASI and in each provider's office to research in great detail the location of every vehicle throughout the day, and in particular before and after a reported service defect. These tools have played a major part in the dynamic improvements in ASI service over the years since the system was implemented.

As an early client and supporter of TSS Paratransit, Timmy Mardirossian, Southland's President, began encouraging the company to develop an alternative to the existing suites of transportation dispatch software. He did this because most major software suites, Trapeze being no exception, run into serious problems with the complexities of heavy urban service, primarily due to the widely varying ratios between travel time and distance that plague traditional routing and scheduling software. The work that TSS did was so encouraging that Mr. Mardirossian formally commissioned them to finish the development of a fully functional routing and scheduling system. This system, called 5M, has been in use at Southland Transit and its sister companies, San Gabriel Transit and California Transit, both providing ADA paratransit services for Access, since 2007.

Feature Services


Southland Transit provides world class cost efficient operations to Transit Agencies, Cities, and other entities. We are able to provide highly skilled staff and services to benefit your riders at a fraction of the cost it is to provide the operation in-house.

Dispatch System

Southland Transit provides sophisticated dispatching systems which enables the services we provide to run much more efficiently which provides a benefit to the customers we serve.

Customer Service

Southland Transit provides Call Center and Customer Service Operations to our clients through a sophisticated environment to provide support services for agencies.