Abstract
Police registrations from 65 accidents on slippery roads in normally Danish winters have been studied. The study showed:
• 1 accident per 100 km when using brine spread with nozzles
• 2 accidents per 100 km when using pre wetted salt
• 3 accidents per 100 km when using kombi spreaders
The results of accidents in normally Danish winter seasons are remarkable alike the amount of salt used in praxis in the winter 2011/2012.
• 2.7 ton NaCl/km when using brine spread with nozzles
• 5 ton NaCl/km when using pre wetted salt.
• 5.7 ton NaCl/km when using kombi spreaders
The explanation is that spreading of brine with nozzles is precision spreading, while spreading of salt with rotation plate are very imprecise; you can measure 80% residual salt when using brine and only 40% when using pre wetted salt. Of course the result would be worse if dry (solid) salt were used on dry roads.
A winter route in Denmark is normally 50 km, but when using driver navigation and GPS controlled spreading of brine with nozzles 110 km is possible and cheaper.
• 1 accident per 100 km when using brine spread with nozzles
• 2 accidents per 100 km when using pre wetted salt
• 3 accidents per 100 km when using kombi spreaders
The results of accidents in normally Danish winter seasons are remarkable alike the amount of salt used in praxis in the winter 2011/2012.
• 2.7 ton NaCl/km when using brine spread with nozzles
• 5 ton NaCl/km when using pre wetted salt.
• 5.7 ton NaCl/km when using kombi spreaders
The explanation is that spreading of brine with nozzles is precision spreading, while spreading of salt with rotation plate are very imprecise; you can measure 80% residual salt when using brine and only 40% when using pre wetted salt. Of course the result would be worse if dry (solid) salt were used on dry roads.
A winter route in Denmark is normally 50 km, but when using driver navigation and GPS controlled spreading of brine with nozzles 110 km is possible and cheaper.
| Original language | English |
|---|---|
| Title of host publication | The Proceedings of the XIVth International Winter Road Congress - Andorra |
| Number of pages | 11 |
| Publisher | World Road Association |
| Publication date | 2014 |
| Article number | 132 |
| ISBN (Electronic) | 978-99920-0-773-0 |
| Publication status | Published - 2014 |
| Event | The 17th International Road Weather Conference - , Andorra Duration: 30 Jan 2014 → 1 Feb 2014 |
Conference
| Conference | The 17th International Road Weather Conference |
|---|---|
| Country/Territory | Andorra |
| Period | 30/01/2014 → 01/02/2014 |
Bibliographical note
The proceedings is published on a CD-Rom in a English, French and Spanish version.Keywords
- Traffic accidents
- Brine
- Ice control
- Spreaders
- Spreading
- Highways
- Denmark