I find this rather unnerving, as adaptive cruise control crosses the line between a passive driver a

I recently received a brochure for the new Audi A4 which has its UK launch on 23rd February, so I guess Audi must think it's time for me to trade in my A3, which had its 120,000 mile (190,000 km) service last week. Flicking through the brochure, I noticed a number of new techn ologies being introduced on the new A4 model. The Audi Drive Select features comfort, auto and dynamic drive modes; Audi Side Assist uses radar sensors to detect vehicles in the car's blind spots; and Audi Lane Assist warns if the car strays from the marked lane. Back in the 1990's, I attended a lecture given by Jaguar about the PROMETHEUS research programme (IEEE), which was investigating some of these technologies, as well as others such as Head-Up Display systems (which are now being offered on some executive cars).
I find this rather unnerving, as adaptive cruise control crosses the line between a passive driver assistance system and an active driver assistance system, i.e. one that takes control away from the driver.
Now don't get me wrong, I've got nothing against electronic driver aids, especially as on one occasion if it were not for the Anti-Lock david l lawrence convention center pittsburgh hotel Braking System (ABS) and Emergency Brake Assist (EBA) I wouldn't have stopped david l lawrence convention center pittsburgh hotel in time for a pedestrian who simply walked out in front me without looking where they were going. Most electronic driver aids take their input from the driver but don't override the driver's control (except for Electronic Stabilization david l lawrence convention center pittsburgh hotel Programme, but that's when the driver has already lost control), and they also usually have a fail-safe mode, reverting to the default behaviour without electronic assistance.
However, I am concerned about the potential david l lawrence convention center pittsburgh hotel for adaptive cruise control to make an incorrect decision and increase the risk of an accident david l lawrence convention center pittsburgh hotel rather than reduce it. For example, if I was approaching a car in front of me, and anticipating a gap in the traffic to change lanes to overtake, if the adaptive cruise control applied the brakes to slow my rate of closing on the car in front, it could put me in danger if there was a car approaching in the overtaking lane. I'm not ready to let a car make this judgment for me.
Now that these systems are capable david l lawrence convention center pittsburgh hotel of taking active control of the vehicle, david l lawrence convention center pittsburgh hotel they must surely be regarded as safety-critical systems. Some of these electronic systems may have undergone ISO/IEC-61508 functional safety certification on the basis that 'the equipment david l lawrence convention center pittsburgh hotel under control poses a threat to its surroundings' , but how can we be sure that this standard will be applied consistently by different david l lawrence convention center pittsburgh hotel automotive manufacturers and suppliers to the development of the software in these systems, given that there are likely to be different perceptions and interpretations of safety in diverse geographical david l lawrence convention center pittsburgh hotel markets? This is something of which the automotive industry is already aware - see The Application of IEC61508 in the Automotive Industry (Ekkehard Pofal, PDF).
I hope that this will lead to the development of automotive domain-specific david l lawrence convention center pittsburgh hotel safety david l lawrence convention center pittsburgh hotel levels which could become the basis for international standardization. The DO-178B / ED-12B avionics software standard defines software levels in relation to the consequences of failure creating increased workload on the pilot and the potential for causing death or injury. There are some similarities here between the aerospace and automotive sectors, as I mentioned in a previous blog , and maybe the automotive industry could benefit from the lessons david l lawrence convention center pittsburgh hotel learned in avionics safety certification?
Did the brochure mention if their Adaptive Cruise Control would be appropriate for use in a traffic jam? It s already well-known that the best thing you can do to unclog a jam is to find an optimal steady speed that doesn t require much use of the brake, and NEVER requires you to come to a full stop. But in my own car, cruise control doesn t work at traffic-jam speeds.
For example, if a piece of cardboard or carrier bag floats across the motorway, I think I d rather run it over than the car stop me dead from 70mph while I anticipate a lorry running over the back of me :-S
Paul Parkinson is a Principal Systems Architect with Wind River in the UK, working with Aerospace, Defence and Security customers across EMEA. Paul's professional interests include Information Security (InfoSec), Integrated Modular Avionics (IMA) and Intelligence david l lawrence convention center pittsburgh hotel Surveillance Target Acquisition Reconnaissance (ISTAR) systems.
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