Private parking firms are to be the subject of a parliamentary debate.
MP Pete Wishart plans to use a variety of parliamentary procedures to call for tighter regulations.
Mr Wishart was inspired to take up the cause after his office was “besieged” by people complaining about Smart Parking in Perth.
He said the company and its operations is “the biggest single issue in the Fair City” and has asked the firm to meet him in the House of Commons.
People have been left confused by a “bewildering” system of vehicle registration identification.
“There are visitors from beyond Perth simply so frustrated with their experience at the hands of this company that they have pledged never to return to Perth again,” he said.
“When I return to Parliament I want to explore how effective regulation can be exercised and the law improved to stop what is almost a licence to harass.
“One way I intend to pursue this is to secure a 10-minute rule Bill and secure a debate on the whole business of the regulation of private parking.
“The regulation at present is insufficient and isn’t working it needs to be reviewed. I am going to make that my business when I go back.”
Mr Wishart added: “The people of Perth should try and avoid any car park operated by this firm.
“Try and use a council-run car park and go nowhere near one of their dysfunctional operations. If you get a fine, be totally aware of your rights.”
A spokesman for Smart Parking insisted the new system was working, saying fewer people were avoiding paying for parking.
He said: “Historically, in some Perth car parks, there has been an issue with people parking but not paying, which was both unsustainable and unfair to those people who did pay.
“Since Smart Parking introduced its new parking system, the situation has significantly improved.
“There has been a 34% increase in the number of people paying for their parking and no decline in the number of motorists using the car parks, suggesting that people accept that it is not unreasonable to pay to park on private land.
“Smart Parking complies with all regulatory requirements and welcomes all positive and constructive attempts to improve the industry.
“If Mr Wishart would like to find out more about the issues and how we are resolving them, we are happy to renew our offer of a meeting at our state-of-the-art Birmingham HQ”.