Failing to indicate is not explicitly banned in the Highway Code, but motorists can still face fines and penalty points if the omission endangers others, according to car insurance experts. The behaviour is typically prosecuted under Section 3 of the Road Traffic Act 1988 for driving without due care and attention or inconsiderate driving.
Highway Code and police powers
The confusion arises because the Highway Code uses advisory language for signals rather than absolute mandates. Rule 103 advises motorists to give clear signals in good time and to cancel them once a manoeuvre is complete, stating that signals warn and inform other road users, including pedestrians, of intended actions.
Road safety officers and traffic units have made clear that whenever an unannounced turn poses a danger or inconvenience, officers have full discretion to intervene. Police guidance emphasises that if neglecting to indicate forces another road user to swerve, brake abruptly or risk a collision, the standard of driving falls below that of a competent and careful driver.
Penalties and consequences
For lower-level occurrences, the Sentencing Council states that roadside officers can issue an instant £100 fixed penalty notice alongside three penalty points. However, if an unannounced turn results in a serious hazard, a crash or endangers pedestrians, the matter is referred to court, where magistrates can impose a fine of up to £5,000 and up to nine penalty points.
National Highways advises: "Failing to signal can lead to fines, points on your licence, or worse if it causes a collision. Whether you're changing lanes or exiting, your indicators are your voice on the road."
Insurance and legal warnings
Motoring insurance giant Admiral echoed these warnings, highlighting that failing to indicate poses severe dangers on daily commutes, as approaching traffic may fail to slow down while pedestrians are misled into believing it is safe to cross the street. Admiral also noted that points on a licence will inevitably push up future car insurance premiums or could even render active cover invalid.
Leading UK motoring lawyer Emma Patterson from Patterson Law said: "In some ways, an over-eagerness to signal can be just as bad as failing to signal. You'll typically get a driver flashing their lights or physically indicating that it's okay for someone to make their manoeuvre. But you might then get a motorcyclist, who's filtering through traffic, oblivious to the signal and who's then put in harm's way. It's a scenario we deal with regularly."
The Highway Code also states road users should "watch out for signals given by other road users and proceed only when you are satisfied that it is safe." Drivers whose vehicles are stopped due to broken or faulty indicator bulbs are granted a strict 14-day window from the date of notice to provide proof of repair to the police.
