摘要: |
The Cambridge busway comes in two parts. One 12-mile section serves 10 stops linking St Ives and Cambridge, and a four-mile section with two stops links the latter to Trumpington. Half-way between rail and road, the busway consists of sunken concrete piles and precast beam sections laid on top. Designed with gentle curves, the busway nevertheless requires buses to be fitted with guide wheels laterally to the near side and off-side front. Linked to the front steering arm, they- not the driver- steer the bus on the busway sections, until the driver takes over on the portions of the route that run on public road.As the only traffic is buses, and as each busway has segregated lanes for each direction, it has a higher speed limit than the surrounding local roads; single-decker buses can go up to 56mph, and double-decker, tri-axle buses up to 50mph. But in April, operator Stagecoach rolled out an automatic speed restriction system on 30 buses. It's said to be the first such implementation of the technology in the UK.There were three reasons for installing the system, according to engineering director Terry Absalom: general safety in the area where the vehicles are travelling, reducing speeds to improve safety and the comfort of the ride. "We are always looking to improve the safety and comfort of our passengers and drivers, particularly when the technology is already there." |