LoginDMR or PoC? Choosing the Right Radio System for School Buses
A webinar explored how school districts can evaluate school bus radio communication systems based on reliability, coverage, scalability, safety features and total cost of ownership.
During Thursday’s webinar sponsored by Hytera, Marketing Director Ty Estes and Director of Engineering Morné Stramrood compared Digital Mobile Radio (DMR) systems and push-to-talk over cellular (PoC) solutions, explaining their advantages, limitations and use cases for student transportation.
“Radios are critical to school operations, logistics and student safety,” Estes declared, adding that reliable communication helps transportation departments, school staff and emergency responders coordinate their efforts.
Understanding Modern DMR Systems
Stramrood began with a technical overview of land mobile radio standards and the growing adoption of digital technologies.
“DMR is an industry standard. This is a very good thing,” he said.
He explained that benefits include increased call capacity, superior voice quality, reduced interference, longer battery life and better range.
Stramrood said school districts still operating analog radios can move to digital systems without completely replacing existing equipment. Many DMR radios support both analog and digital operation, allowing districts to transition gradually.
He reviewed the flexibility of modern DMR systems, including group calls, individual calls, emergency alerts, text messaging and centralized dispatching capabilities.
Additionally, school districts can organize users into communication groups for transportation, security, maintenance, administration and emergency operations. He said districtwide call groups can connect multiple campuses under a single communications platform.
Communications During Emergencies
Safety and emergency response remained a recurring theme throughout the webinar.
Stramrood shared examples of emergency notification capabilities that allow transportation directors to quickly alert school bus drivers during critical incidents, such as active shooter situations. Dispatchers can send emergency messages directing buses to predetermined safe locations until officials issue an all-clear notification.
He also highlighted safety features including GPS tracking, emergency call functions and location-based services. He also explained how districts can integrate modern radio systems with gate access control systems and public address networks.
Expanding Coverage and Capacity
Communication challenges in larger school districts often extend beyond a single campus or transportation facility.
There are several methods for expanding radio coverage, Stramrood noted. Repeater systems increase radio range and reliability when buildings or terrain create coverage barriers. Internet Protocol (IP) systems provide a cost-effective way to connect multiple locations across broader geographic areas. Trunking architectures support more simultaneous users and communication groups.
Since communication needs vary among districts, Stramrood stressed that transportation leaders should consider future planning and scalability when selecting a system.
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Leveraging Push-to-Talk Over Cellular
The second half of the webinar examined push-to-talk over cellular technology, which uses commercial LTE and Wi-Fi networks instead of dedicated radio frequencies.
Unlike conventional radio systems that require FCC frequency licenses and supporting infrastructure, Estes explained that PoC systems operate through cloud-based platforms and existing nationwide cellular networks. PoC devices can support multi-carrier SIM cards, helping maintain coverage when one network is unavailable.
He shared that advantages of PoC technology include nationwide coverage, lower upfront costs, rapid deployment, end-to-end encryption and voice or video applications.
Districts can deploy PoC technology through purpose-built handheld radios, vehicle-mounted mobile radios and ruggedized smart devices that can run business applications, Estes stated.
He showed how the technology also equips transportation departments with GPS tracking, geofencing, instant group voice and video calling, dispatch applications, and centralized management tools to monitor assets and personnel in real time.
Choosing the Right School Bus Radio Solution
Rather than positioning DMR and PoC as competing technologies, Estes and Stramrood emphasized that each serves different operational needs.
DMR systems offer dedicated communications infrastructure and may be a better fit for districts focused on mission-critical reliability. PoC solutions provide broad geographic coverage and lower deployment costs while leveraging existing cellular networks.
Before making a purchase, Estes encouraged transportation leaders to work with experienced radio dealers and evaluate equipment firsthand.
“Get a demo,” he advised, noting that many dealers can provide loaner equipment so transportation departments can test radios in real-world operating conditions.
“Make sure you get the devices that are right for your school district and not the devices that happen to be available,” he cautioned.
Hytera will display its communications options at its booth during the STN EXPO West Trade Show in Reno, Nevada, on July 13-14.
This article was written with the assistance of AI.
The post DMR or PoC? Choosing the Right Radio System for School Buses appeared first on School Transportation News.
