trolleybussysteem

A trolleybus system is a form of electric public transport that draws power from overhead wires. Unlike a tram or streetcar, a trolleybus runs on tires and does not require rails, allowing it to share roadways with other vehicles. The overhead wires, typically two in number, carry direct current electricity. A trolleybus is connected to these wires by poles called trolleys, which slide along the wires to maintain contact and provide power.

Trolleybuses offer several advantages. They are quieter and produce fewer local emissions than diesel-powered buses, contributing to improved air quality in urban areas. They are also generally more energy-efficient than internal combustion engine buses. The absence of rails means that trolleybus systems can be more flexible in their routes, and the infrastructure is often less disruptive to install and maintain compared to light rail or tram lines.

However, trolleybus systems also have limitations. The overhead wire network can be aesthetically unpleasing and can interfere with certain types of large vehicles or during construction. The initial investment in infrastructure, including the wires, poles, and substations, can be significant. Furthermore, trolleybuses cannot deviate from their designated routes without losing power, and they can be affected by power outages. Despite these challenges, many cities around the world continue to operate and expand their trolleybus networks due to their environmental benefits and operational efficiency.