Most Perth motorists say traffic congestion throughout the city is getting worse and adding significant time to their daily drive to work.
Research for the RAC last year found 69 per cent of motorists believed congestion had worsened over the previous 12 months, with 46 per cent saying it had increased their travel time to and from work.
The average increase was nine minutes.
It also found fewer people were driving to work, from 87 per cent in 2010 to 80 per cent last year.
Though 58 per cent of respondents said they would not favour a congestion tax or road tolls to reduce congestion, most drivers aged between 18 and 34 said they would support a charge.
The release of the research coincided with the launch of the biggest survey of traffic congestion in WA.
Conducted by the RAC, in conjunction with _The Weekend West _and Channel 7, the Red Spots survey will allow motorists to nominate the city's worst congestion points.
Results will be collated after six weeks and the worst "red spots" identified. An independent roads expert will assess the findings to determine how to relieve the congestion.
In some cases, it might be as simple as a minor road realignment, modified traffic signal or dedicated turning lane.
"Leading into the State election, it is important for motorists to continue to send a very strong message, both to the State Government and local MPs, that they want something done about congestion," RAC head of member advocacy Matt Brown said.
"The State Government and the Opposition need to spell out clearly what they will be doing to address the congestion issue, in terms of both investment in the road network and in public transport. "The Red Spots campaign represents a big opportunity for motorists at a time when we know both parties are putting together their policies.
"It's a great opportunity to send the message that motorists have had enough of congestion issues and want something done about it sooner rather than later," Mr Brown said.