Anti-collision type speed difference selection deceleration strip

The utility model relates to the technical field of deceleration strips, in particular to an anti-collision type speed difference selection deceleration strip, which has the effects of reminding a driver to decelerate and ensuring the passing safety of a vehicle as much as possible when the vehicle passes at a very high speed, and comprises a deceleration strip and a contraction device, and the deceleration strip is arranged at the top end of the contraction device. The contraction device comprises a shell, the shell is obliquely arranged, two sliding plates are arranged at the bottom end of the deceleration strip, sliding grooves are formed in the sliding plates, sliding blocks are arranged at the top end and the bottom end of the interior of the shell, and the sliding grooves are matched with the sliding blocks correspondingly. A supporting plate is arranged between the two sliding plates, a connecting rod is arranged at the bottom of the supporting plate, a pressing plate is arranged on the left portion of