Passenger who sexually assaulted woman on coach had knife in case
get under the blanket and touch her buttock area."
The coach driver later was informed and the police were contacted.
Ms Khan said: "The whole incident lasted around an hour. She was brave enough to record some of the attack."
Police seized two suitcases from the defendant after his arrest and found a Stanley knife hidden inside.
Ali, of Egerton Street, Middlesbrough, pleaded guilty to sexual assault and possession of a bladed article.
In a victim impact statement, the female said she has been left frightened to take public transport ever since.
Gary Wood, defending Ali, said: "The defendant admitted the offence at first opportunity.
"The position is the defendant is quite clear that he suffers with his mental health.
"He had been hearing voices for a significant period of time in the lead up to this offence.
"This is a case where there is phycological mitigation. He is quite clearly anxious about an immediate prison sentence being imposed."
While dealing with the blade offence, Mr Wood told the court his client found the knife and put it in his bag.
He said: "He came across the knife as he was travelling to this area. He came across it but didn't do anything about it.
"I simply ask the court to keep the sentence as short as possible."
Mr Recorder Andrew Sutcliffe told Ali: "That victim has made an impact statement which I have read, which is clear that she was traumatised by conduct and it has had a very serious affect on her."
The judge sentenced Ali to 14 months, suspended for two years.
He must complete an accredited sex offender programme alongside 43 rehabilitation days and sign the sex offender's register for ten years.