Influences of Exit Advance Guide Signs on the Trajectory and Speed of Passenger Cars in Highway Tunnels

Figure 3

Test model. L₁ is the “light adaptation” distance; L₂ is the traverse distance; L₂₁ is the wait insertion distance; L₂₂ determines whether it is the distance of the inserted gap; L₂₃ is the adjusting distance; L₂₄ is the transverse distance to the inner lane; L₃ is the safety confirmation distance.