英雄赛道续约

我们了解速度限制的问题，尤其是在南宁安的问题。

We have reworked our programme so that it could be lifted sooner. We will still carry out all the work we have planned, but it will be done in a differentorder. This means that last weekend we didn’t install any track but we completed follow-up works to the track already installed so that the speed restriction could be lifted. We apologise to all passengers who were affected by this restriction.

我们将继续通过该计划在监测冠状病毒情况，并当然需要必要的预防措施。

我们很遗憾我们无法举起速度限制，我们了解这对您的旅程有多么烦恼。

When we replace track, we put a speed restriction in while it beds in and we carry out checks to make sure that there are no issues. Sometimes further work needs to be carried out before the speed restriction can be lifted. It is still safe to run trains over the track as long as they are travelling at a slow speed.

When hundreds of trains are running over our tracks every day, like at Maryland, track becomes worn and we need to replace it in order to prevent defects and breaks which cause delays and cancellations. Because we are replacing entire sections of track, there is too much work to do overnight, and this is why it has been planned in over consecutive weekends, so that we can still run a train service on weekdays.

工作是按时开始的，本周末在其中一条线上重新续订了伦敦计划的一条线。

The speed restriction will be lifted by 30^thMarch when the work will be finished. There will be some minor follow-up works on the 17^thand 18^th四月。

更多的信息about how services will be affected is available atwww.greateranglia.co.uk/servicieLterations.

Our team completed all works as planned this weekend, including renewing 3 points and 142 yards of plain line track. Plain line track is a stretch of railway track that does not have any junctions, crossovers or points on it. Replacing existing rail and sleepers with high-performing new ones, helps keep services moving reliably.

The junction at Maryland is a key section of the route as the points (movable sections of track) here allow trains to be diverted onto other track if there are issues ahead. Once the work is complete, this will help us minimise disruption and keep the railway moving.

作为安全预防措施，同时我们正在进行这些关键作品，我们已经应用了一种速度限制，这意味着一些服务将在早晨和晚上峰值取消。计划在下周（3月9日）提升速度限制。我们建议客户在旅行之前检查，并为其旅行计划额外的时间。

This weekend we’ve replaced two points on crossover sections of the main line.

点是可移动部分的轨道，允许列车从一行移动到另一行。在我们最繁忙的一行中，100多个火车将每天只通过一组积分。

Points can sometimes fail, this is when there is a fault with the movable pieces of track or their operating equipment that enable trains to change tracks. This may then result in disruption to journeys as we can’t tell trains to proceed. Points can fail for multiple reasons; they might get clogged with debris or ice, the drive mechanism might fail or, in hot weather, they might expand too much.

一旦我们更新积分，将有更少的故障和更少的维护关闭。

将在即将到来的周末更新四个交叉口 - 这些是轨道的部分，允许火车从一条轨道改变到另一个轨道。马里兰州有四条线，两条往返伦敦和伦敦旅行的两条线。当前方的一个线路上存在问题时，这些轨道之间的交叉将用于转移列车。这意味着我们不必完全停止服务，火车可以在问题周围旅行，并导致乘客的干扰较少。

It takes a total of 50 hours to take out the old track and sleepers and replace them with the new ones. There is then follow up work for tamping, welding and stressing.