Hybrid buses are vehicles that combine a traditional internal combustion engine with an electric motor. This design allows them to use less fuel and produce fewer emissions compared to standard diesel buses. By switching between the two power sources, hybrid buses can operate more efficiently, especially in urban environments with frequent stops. These buses often feature regenerative braking, which captures energy typically lost during braking and uses it to recharge the electric motor. As a result, hybrid buses contribute to cleaner air in cities and help reduce overall transportation costs for public transit systems, making them an increasingly popular choice for urban transportation.