Passenger Car Unit - Definition & Examples
Passenger Car unit PCU:
It is a vehicle unit used for expressing highway capacity. One car is considered as a single unit, cycle, motorcycle is considered as half car unit. Bus, truck causes a lot of inconvenience because of its large size and is considered equivalent to 3 cars or 3 PCU.
| Type of Vehicle | PCU |
| Car, taxi, pick up | 1.0 |
| Cycle, motor cycle | 0.5 |
| Bus, truck, | 3.0 (4.o in some cases) |
| Horse drawn cart | 4.0 |
| Bullock cart | 6.0 |
| Bullock cart (Large) | 8.0 |
Volume
- Number of vehicles crossing a point on the road during a specific time period. It is carried out for :
- Design and extension of existence road,
- Traffic trend and pattern,
- Geometric and structural design of new road,
- Design of footpath, cross wall,
- Pedestrian signals,
- Plan of one way traffic
- Other regulatory measures on the road
