Expressway ramp is the road on the right side of expressway exit or entrance (generally at 150-200m). Ramp, also known as approach road, is an engineering term, which usually refers to a small section of auxiliary road, land bridge/ramp/approach road and distribution road providing vehicles with access to the main line. It is the main traffic building that constitutes the road interchange.

After the on-ramp is the acceleration lane, and after the off-ramp is the deceleration lane. Generally, the speed in the ramp should be less than 40km/h, and the acceleration lane should be accelerated to more than 60km/h quickly.

So the road from Dongli to Tanggang Expressway toll station is the ramp.