A young cyclist's fatal collision with a turning concrete truck has prompted calls for change, from the Coroner

Nineteen-year-old Fyfa Dawson died in a crash during the construction of the Christchurch motorway at Halswell in October 2019.

Coroner Ruth Thomas found the temporary traffic management plan was vehicle-centric, forcing cyclists to use the pedestrian pathway - a blind spot for truck drivers.

She says there was also no one stationed at the work site gate and warning sensors weren't used.

Thomas recommends NZTA provide heavy vehicle users a free lens to help them see in their passenger side blind spot.