Fed-up police published a picture of taxis blocking Palmerston Road in Southsea.
The photograph was uploaded to the Portsmouth police Twitter account @PompeyPolice with the message: ‘Due to the current parking skills of the taxis, the one way #PalmerstonRoad is currently blocked!’
An evening-only taxi rank was incorporated in a narrowed driving lane when the southern end of the road was reopened to traffic in October.
Last July, Portsmouth City Council decided to fork out £20,000 making Palmerston Road a one-way route for traffic from the seafront.
The move by Tory cabinet member for traffic, Cllr Ken Ellcome, came after businesses highlighted the crippling impact the pedestrian route has had on trade since it was introduced in 2012.
The new layout will remain open for 12 months as a city council experiment to see how well it works as a one-way system for northbound traffic.
The road was narrowed slightly to deter vehicles from speeding and parking spaces will be created between the existing granite planters to allow short-stay parking during the day, a taxi rank in the evenings and loading spaces for deliveries to businesses.