Environmental Project No. 1022 – Test cases for control of Nord2000

Test cases for control of Nord2000

1 Introduction

The present report contains a number of test cases for which calculations have been carried out by the new Nordic road traffic noise calculation method Nord2000. The model is described in [1], [2], [3]. The test cases have been elaborated to cover most algorithms of the calculation method. The purpose of the test cases is to provide a basis for testing software developed according to the new Nordic model.

The test cases are divided into four groups:

The first group denoted "Straight Road" contains 62 cases for a straight road. The test cases cover most parts of the propagation model with the assumption that the terrain profile perpendicular to the road is constant.
The second group denoted "Curved Road" contains 8 calculation points distributed along a road with two lanes and a turn, looking more like a "real" case. These test cases are based on a former collection of test cases for the old Nordic traffic noise prediction model.
The third group denoted "City Street" contains 4 calculation points. Three of the calculation points are placed in a street with the same traffic flow, but with different contributions from reflections. The last calculation point is placed in a street situated parallel to the street with the traffic flow, but without any traffic itself.
The fourth group denoted "Yearly Average" contains four test cases where the yearly average of the noise is calculated. These cases are based on one of the cases for flat terrain from the group "Straight Road".

The test results have been collected in one Excel spreadsheet for each group.