A car driver left a 56-year old motorcyclist injured when their vehicles collided while overtaking and yet the car driver failed to stop.
It happened on the A6071 in Longtown on Saturday 24th August at 11.30.
A silver-coloured car overtook a motorcyclist on approach to the junction with the A7 but ended up colliding with the bike.
In a separate incident, a scrambler bike rider failed to stop after a collision in Cleator Moor on the same day at 5.30pm. It happened on the junction of Ennerdale Road and Keir Hardie Avenue.
Cumbria Police is appealing for information to trace the identity of the drivers that failed to stop.
It comes as the emergency services have been raising awareness of problems on our roads today, Sunday 25th August.
The multi-agency open day is the first of its kind and is showing people how the police, fire service and mountain rescue teams respond to accidents.
It's hoped it'll reduce the number of collisions and make our roads safer.