A12 crash sparks police investigation after Mercedes drives off after crash with motorbikeThe Mercedes was reported to be driving erratically at the timeView Image Essex Police is appealing for information into the assault (Image: PA)A crash on the A12 has sparked an investigation after one of the vehicles involved did not stop. Essex Police are appealing for information from drivers after a collision on Tuesday, January 20 at around 4.40pm. ‌An Essex Police spokesperson said: “We are appealing for any information or dashcam footage after two cars and a motorcycle were involved in a collision on the A12. It was reported the Mercedes was driving erratically before the collision. You can contact Essex Police by submitting a report on our website or by using our online Live Chat service which is available 24 hours-a-day, seven days a week.