Influence of Large Vehicles on the Speed of Expressway Traffic Flow

Table 2

Level of service for basic expressway segments.

Level of service
A	≤ 0.35
B	0.35 <  ≤ 0.55
C	0.55 <  ≤ 0.75
D	0.75 <  ≤ 0.90
E	0.90 <  ≤ 1.00
F	> 1.00