Metrolink has announced that the Zero-Emission Multiple Unit (ZEMU), powered by hybrid hydrogen and battery technology, will undergo testing for the San Bernardino Line's Arrow service. The testing will result in service disruptions for specific Arrow trains in July, including late-night and early-morning trains, as well as a complete suspension of service on a weekend. While alternate transportation will not be provided by Metrolink during these disruptions, passengers may consider utilizing Omnitrans bus service between Redlands and San Bernardino. Despite the disruptions on the Arrow service, Metrolink service to and from Redlands will continue as usual. Additionally, Metrolink will be evaluating GPS-based safety technology during the testing phase, aiming to enhance train safety and prevent collisions. This innovative approach showcases Metrolink's commitment to incorporating sustainable and safe technology into public transportation systems for a more environmentally friendly and efficient operation.