Probationary plates, or ‘P plates’, are used by newly qualified drivers who have recently passed their driving test.

Unlike L plates for learner drivers, P plates are optional and not a legal requirement.

These plates are used to show other road users that the driver is inexperienced and has recently become a fully licenced driver.

It is hoped that this will give the new driver more time and space to carry out manoeuvres – and to not make them feel any unnecessary pressure.

P plates typically have a red or green letter 'P' displayed on a white background. Like the L plates, the letter 'P' should be at least 79mm tall, with a width of at least 14mm – however, this isn’t a legal requirement.

If they are being used, then they should be displayed prominently on the front and rear of their vehicle, so they are clearly visible to other road users.

Newly qualified drivers have stricter rules compared to experienced ones. This usually means that for the first two to three years of driving, some drivers may keep the plates on the vehicle for some time.

Both L and P plates are a crucial necessity for UK roads for several reasons.

Firstly, they are there to increase safety for all road users. They serve as a clear indicator that the driver is a learner – or recently passed their test – and has limited experience behind the wheel. This helps other drivers and pedestrians exercise caution and patience when they are nearby.

By identifying themselves as learners, other drivers are more likely to receive considerate of their situation and be less aggressive and impatient towards them.

It also helps them be more alert of potential hazards for both themselves and the learner driver. This leads to slower and safer driving.

Also – L plates are a legal requirement for these reasons. P plates are optional for the driver.

However, everyone who drives has gone through the experience of learning and passing a test – so leaving the P plate on will mean they are more likely to empathise with what they are going through.

For learners themselves, displaying L plates can be a source of growing their confidence when driving and helps them develop safe driving habits.