Congestion is getting worse in Britain with it estimated that UK drivers are spending around two and half days stuck in traffic each year.
The new traffic data from Inrex suggests that Brits lost the equivalent of a week to jams in 2018.
An average of 178 hours was lost per driver to congestion in 2018, the data suggests.
It is estimated to be costing each driver an average of £1,317 sitting in traffic each year.
The worst affected motorists were Londoners who lost 227 hours each on average, compared with 190 hours in Belfast, 165 in Edinburgh and 143 in Cardiff.
Londoners lost an estimated £1,680 while drivers in Edinburgh lost £1,219.
On the other end of the scale, Liverpool had the lowest cost of congestion among the cities studied, at £878 per driver.
Other negative effects of congestion are lower productivity as people are more regularly late to work and increased pollution and accidents.
The worst affected road is London's A406 North Circular Road from Chiswick Roundabout to Hanger Lane with driver closing an average of 61 hours per year by using it.
It is followed by the a23 Brixton Rd from Kennington to Thornton Road and Kingsway/Strand/Cannon Street from Russell Square to Monument. Motorists lose an average of 56 and 49 hours respectively on these London roads.
The research found that London is the sixth most gridlocked city in the world when the population is taken into account.
Moscow tops the list, ahead of Istanbul, Bogota and Mexico City.
Inrix transportation analyst Trevor Reed said: "Congestion costs Brits billions of pounds each year.
"Unaddressed, it will continue to have serious consequences for national and local economies, businesses and citizens in the years to come.
"In order to avoid traffic congestion becoming a further drain on our economy, it is increasingly obvious that authorities need to adapt.
"With the help of new and innovative intelligent transportation solutions, we can begin to tackle the mobility issues we face today."
RAC spokesman Rod Dennis said: "Last year UK drivers told us that they are actually becoming more, not less reliant on using their cars - with struggling public transport cited as one of the reasons.
"This is a serious concern when you consider the limited physical space in our cities and the growing pressures to move large numbers of people around to get to their places of work and leisure."
Other roads in the top 10 for hold-ups last year were:
- Leeds Road/Saltaire Road from Harrogate Road to Bradford Road, Leeds (44 hours per year wasted)
- A34 from Highfield Road to Highgate Middleway (44 hours per year wasted)
- Bury New Road from Higher Broughton to M60 (34 hours per year wasted)