wheel slip

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wheel slip

The ratio of the rotational speed of a braked wheel to that of an equivalent free-rolling wheel, expressed as a percentage. The slip is equal to the speed of a braked wheel divided by the speed of an unbraked wheel, expressed as a percentage.
References in periodicals archive ?
A spokesman for parent company Govia Thameslink Railway, which is led by Charles Horton, said: "During the leaf-fall period, with challenging, slippery rail conditions, trains take longer to reach destinations, leading to congestion, cancellations and delays.
It has now connected a Japanese-built train running in Hong Kong with its Automatic Sander system, which effectively reduces stopping distances under slippery rail conditions by introducing sand between the wheels and the rail, in an initial order worth pounds 75,000, also including design and trials.
One example of this is investment of more than PS300,000 this year to combat the slippery rail conditions which slow down trains during autumn.
The driver, who was unfit to continue the journey, blamed slippery rail conditions.
And they were shocked when station staff told them slippery rails were to blame, causing the driver to misjudge his braking distance into the station.
Now Merseyrail says the delays have been caused by slippery rails "caused by leaf fall", as well as by the fact that trains are busier because of the Lime Street closure.
Spokesman Slippery rails caused delays on several routes, while there were also problems with train faults and emergency cords being pulled.
Contract notice: Rural - delivery of friction modifier to prevent slippery rails.
Rail users on the Wrexham to Bidston line faced delays and cancellations as trains ran at a reduced speed due to slippery rails.
This reflects investment in new speed-trap devices which apply the brakes automatically where necessary, as well as action to highlight the risks of slippery rails and other problems to staff.
com/leaffall Rain delays TRAIN services were delayed by slippery rails as heavy overnight rain sparked chaos on yesterday morning's commute.