Turning manoeuvres involving collisions between trucks turning right/left and cyclists，typically occurring at lowerdriving speeds or standstill, usually have serious consequences for vulnerable road users (VRUs). In the past, thesafety of VRU was raised by an improvement of the truck driver's vision by increasing the number of mirrors and by equipping trucks with side under-run protection. Since turning accidents still happen and Blind Spot Information System (BSIS) have been introduced in a lot of vehicle segments. BSIS means a system installed on a truck to inform the driver of a possible collision with a bicycle near side, it isobvious to use such assistance systems for avoiding accidents between turning trucks and cyclists. The United Nations Economic Commission for Europe(UNECE) offically announced the technical regulations UNR151 related to the blind spot monitoring system. The UN R151 regulation will be take into effect on Jul,2022. Considering the international influence of the UNECE regulation, it can be foreseen to increase More countries will adopt UN R151 as the technical standard of their blind spot monitoring system. Autostar Safety will help drivers to gain more safety via it's BSIS system.