Traffic performance

The transport performance , also called transport performance , transport performance or transport capacity, is a statistical measure (amount of effort) in transport related to trains or railway lines . The maximum possible value of the traffic performance of a traffic infrastructure is called its performance .

definition

Transport work (VA) per time (t) is defined as transport performance (VL) . Traffic work is the product of the traffic volume (VM) (sum of all traffic elements VE) and the distance covered (s). An alternative definition is the product of traffic density (VD) times route length on which this traffic density occurs.

${\displaystyle {\text{VL}}={\frac {\text{VA}}{t}}={\text{VD}}\cdot s={\frac {s\cdot {\text{VM}}}{t}}={\frac {s\cdot \sum {\text{VE}}}{t}}}$

This traffic performance can be differentiated according to the type of traffic elements of the traffic volume (e.g. goods, person, message).

Units of transport performance include tkm / year in freight traffic , pkm / year in passenger traffic or, in combined statistics, also traffic units -km / year.

In contrast to the transport system, in the communications system the service is only described by a single measured variable, because the transport quantity and distance are hardly relevant for the description of the service. Reason:

1. In telecommunications, the effort involved in signal transmission is almost independent of the distance.
2. The measurement of the volume of traffic also differs from the transport, because a transmission line can only have two states: occupied or occupied (only the occupancy time could be an indication of the amount of information transmitted - but does not have to be). Therefore, a special parameter is used in data traffic to describe the service: Erlang (Erl). The use of the term traffic performance is not common in communications (see also performance (communications engineering ) ).

The traffic performance is commonly used as a parameter for the quantitative description of traffic processes. This size is not suitable for comprehensively describing the actual effort or the actual traffic process. Example: 100 tkm / hour can be 100 tons of goods that were transported over a distance of 1 kilometer in 1 hour; However, it can also be 1 tonne of goods that were transported over a distance of 100 kilometers in 1 hour.

Traffic performance statistics

The traffic performance of the freight transport in Germany:

Data as of March 2008	2003	2004	2005	2006	2007	annotation
Road freight transport (million ton kilometers)	373,400	392,600	404,500	461,900	466.200	Change in 3 years: + 61,700 million tkm = 15.25%
Rail traffic (million ton kilometers)	85.128	91,921	95,421	107.008	114,615	Change in 3 years: + 19,194 million tkm = 20.11%
Inland waterway transport (million ton kilometers)	58,154	63,667	64,095	63,975	64,717	Change in 3 years: + 622 million tkm = 0.97%
Crude oil pipelines (million ton kilometers)	15,407	14,236	16,741	15,844	15,824	Change in 3 years: - 917 million tkm = - 5.48%

Source: Federal Statistical Office Germany

See also

• Operating performance
• Traffic statistics
• Transport service

Individual evidence

1. ↑ Hendrik Ammoser, Mirko Hoppe: Glossary of Transport and Transport Sciences - Contributions to the discussion from the Institute for Economics and Transport, TU Dresden, p. 29 “Transport performance” (PDF; 1.3 MB)
2. ↑ Transport performance - freight transport ( Memento from May 31, 2008 in the Internet Archive ), Federal Statistical Office .