The driving conditions late Tuesday afternoon and the evening were extremely challenging. Prior to the snowfall on Tuesday afternoon, the two gritting runs that were conducted on Monday night and Tuesday morning provided sufficient grit to keep the roads safe for users and double what was normally laid down. The highways team also tested the level of salt to ensure that it was sufficient to work properly. Our next gritting run took place at 6pm as planned to coincide with the heavier volume of traffic.
Unfortunately, there were significant delays on some key routes due to buses that had jack-knifed, the very high volume of traffic on the road which went onto the network at the same time, and some vehicles were being abandoned. This meant our gritters had problems getting through to address some of the problems that were reported to us, particularly on slopes. All the gritting fleet was working and the teams did manage to get through and cleared the obstructions as fast as possible. Dunkerton Hill was a particular problem and abandoned vehicles led to tailbacks.
In order for grit to work, the action of passing traffic mixes the salt in with the snow and starts to turn it to a slush that passes through the highway drainage. It is for this reason that a 6.00pm gritting run took place to coincide with the traffic. Because of the lack of movement on the network due to these factors, a situation was created where the roads became slippery and drivers became frustrated.
We understand the frustration that drivers must have felt and thank people for their patience during this difficult night. We tweeted updates throughout the evening and relayed concerns directly to the gritting team to assist them in identifying the most difficult situations.
The gritting teams conducted a further three runs during the night and the main roads this morning were clear and for the most part, running smoothly.