A cyclist claims he was warned by police he could face an assault charge after he saw a driver throw litter out of his car so threw it back through his window . The rider filmed the moment he confronted the motorist , who got out of his vehicle and asked him for a fight in Dumbarton , near Glasgow . In the footage the cyclist tells the driver , who is wearing a white cap and white t-shirt , 'here 's your stupid litter back ' , before throwing the cup into the man 's Vauxhall Corsa . But after contacting the police the cyclist was warned he could be charged with common assault for instigating the fight . Scroll down for video . Row : This is the moment a driver asked a cyclist for a fight after he confronted him about dropping litter . Drama : In the footage the cyclist tells the driver : 'Here 's your stupid litter back ' , before throwing the cup into the man 's Vauxhall Corsa . Officers added that no charges would be brought against the driver for threatening behaviour . The 20 year-old cyclist , who has asked not to be named , posted the video online last Thursday in an attempt to shame the motorist . He said : ' I just thought for some reason in my head I should be confronting this person . I was n't intending it in a very aggressive way . 'As I approached the driver I asked him to roll down the window and this was when I threw the cup in the window . ' The rider 's video shows him picking up an empty Pepsi cup he claims the driver threw from his car . He then pedalled after the black car , which was caught in traffic and tossed the cup back through his window . Evidence : The cyclist filmed the car and the cup he claims was thrown out of the window in Dumbarton , Scotland . The rider 's video shows him picking up an empty Pepsi cup he claims the driver threw from his car . Fury : The driver rushed out of his car to asked if he wants to go to a local park for a 'square go ' - slang for a fight . The furious motorist leapt from his seat and challenged the cyclist to a fight before driving off . He then turned around and wound down his window to hurl more abuse at the cyclist as he passed . The cyclist caught the incident on a head cam and tried to report the motorist to police . In an expletive-laden rant , the driver says : 'What do you think you 're doing , do you think you 're smart or something ? Get off the bike . ' He then walks back to his car , before driving past the cyclist , rolling down his window and asking if he wants to go to a local park for a 'square go ' . The cyclist declined and hurriedly pedalled away from the scene in Dumbarton , Scotland . When the cyclist sent the video to police he said two officers came to his house to see the footage . He claims they told he they could not bring a Breach of the Peace charge against the driver because the cyclist was clearly the instigator for throwing the cup inside the car . They suggested that he should be charged with common assault but the case was dropped . The cyclist said : ' I do feel this guy needs to be named and shamed . '
Rider threw cup into Corsa and shouted : ' Here 's your stupid ride back ' Film of incident shows driver rushing from car and threatening him for a fight . Cyclist went to the police who he claimed accused him of death row . police will take no action for litter allegations or threatening him .