Directors-general who writes on DN Debate 29/1 stuck in a paragrafstyrt syndabockstänkande that have no relevance to the winter complex accident scenarios. Let me explain:

1.

Situationsoberoende fartgränser can lull into false sense of security and increase the risk of accidents. An example is frontalkrocken outside of Kiruna, which killed six swiss tourists the night of 12 January. Olyckskurvan is 90-signposted, but the radius of curvature and the slope does not meet more than the requirements of 60 miles per hour in vägreglerna ’VGU’. Moreover, the roadway is impermissibly narrow.

2.

A nationwide problem in infrastructure is the lack of påkörningsvänliga barriers with adequate krockkapacitet along the routes and at the movable bridges. It became evident at the fault tree analysis of the crash on the Södertäljebron a februarinatt almost three years ago. Then killed five british musicians. The opening lyftbrons crossmember penetrated through the windshield of their rental car, which then uncontrollably fell down in the channel.

The state haveriutredarna ignored both the slipperiness of brorampen and the explanation of driver behaviour presented in the british media. He drove regelvidrigt by the lättkrossade the barriers, got the investigators to forget about the central government system in the vision zero. Pitfall on the E4 over the channel will therefore continue to be opened daily without the gentle emergency stop available in the market.

3.

Regardless of the controversy, hopefully the director-general’s op-ed to stimulate the interaction with experienced professional drivers and the transport industry, the transport agency will now need to its mandate from the government to review the safety of short-tractor with fifth wheel ”EUROPEAN trailers” (EUROPEAN traders).

to understand the process behind the fällknivshaverier that EU traders will often be seen in the online videos, and in photos in the mass media, we have to KNOW the combined vehicle dynamic modelleringserfarenhet with many years of observations, especially from professional drivers. The process is explained briefly here with a video where, among other things fällknivsförloppet on the ice – and snöväglag demonstrated in a low speed.

the Swedish transport administration’s statements in the DN if masskraschen on Tranarpsbron in January 2013, holds the same guilt-inducing tone in last week’s op-ed. This is in contrast also to our KNOW-facts about the three German EU-trader who brought down together and blocked one carriageway of the E4 motorway at Tranarpsbron, which initiated masskraschen.

vehicle dynamic calculations and measurement data from the Chalmers suggest that the EU-tradarnas traction control system is not capable Swedish extremhalka. Antisladdfunktionerna can aggravate the situation, when the truck suddenly switches from under – to oversteer. To the Swedish authorities, sets higher requirements on the halkbekämpningen therefore appears inevitable, according to Nollvisionens responsibilities.

For deeper study driving safety among EUROPEAN traders, applied to KNOW in march 2018 if research grant from the motorist’s Skyltfond. The dmv rejected.

We are now prepared, instead, to communicate our insights to the Swedish transport agency more interested administrators.