Emergency services are on the scene of a two-car crash at Lambton tonight.

The incident occurred on Croudace Street, just past Charlton Street, with the crash first reported at around 8:41pm on Tuesday.

Transport for NSW reports that two of the three northbound lanes are currently closed (lane 1 and lane 2) while emergency crews remain at the scene.

Motorists are being urged to reduce speed, exercise caution, and expect delays in the area.

Further details, including any injuries and the cause of the crash, have not yet been confirmed.