The aim of the study presented in this report was to investigate what cues cyclists use to interpret the intention of motor vehicles (MVs) they interact with. This was done with help of on-site observations of cyclists’ interactions with motor vehicles (MV) at signalised intersections with different bicycle infrastructure facilities: A) no dedicated cycle facility, B) cycle lane and C) cycle path. Interactive situations, when cyclists aiming to cycle straight through the intersection and MVs aiming to turn right approached the intersection simultaneously were observed and cyclists' visual search behaviour was categorised. The field observations were carried out by human observers during morning and afternoon peak hours of working days, during September 2018 to August 2019 in the cities of Kristianstad, Lund and Malmö in Sweden. Totally, at the three different types of sites, 1416 situations were observed.Cyclists were interviewed on-site at the three different types of sites to explore their general strategy in searching for cues to interpret the intention of the driver of the MV and their behaviour generally in an encounter. At each of the three different types of sites, around 100 cyclists were stopped (after they passed the intersection in straight direction), and interviewed. The interviews were made on working days during 7:00 and 17:30.The majority of the interviewed cyclists said that when arriving at an intersection just after a motor vehicle they usually pass it on its right side. The observations showed that at sites with cycle lane and sites with cycle path, the great majority of the cyclists passed the motor vehicle on its right side. If the motor vehicle was a heavy vehicle (bus or lorry), then somewhat fewer cyclists passed it on its right side. At sites with mixed traffic (no cycle facility), only about one third passed the MV. The largest share of cyclist at sites with cycle lane and sites with cycle path did not look at the MV at all, while at sites with mixed traffic (no cycle facility) the largest part of the observed cyclists scanned the whole motor vehicle. At sites with cycle path, the cyclists looked for eye contact with the driver of the MV to a much larger extent than cyclists at the other two types of sites, where they either scanned the whole motor vehicle or looked at its turning indicator. Those cyclists who passed the MV on its right side were more active in their visual search behaviour than those not passing the MV. Cyclists at sites with mixed traffic (no cycle facility) were more active in their visual search behaviour than cyclists at the other two types of sites. The share of critical situations indicates that the infrastructure solution with mixed traffic (no cycle facility) is the safest one and cycle lane solution is least safe. However, it must be kept in mind that traffic volumes are much lower at intersection without dedicated cycle facility, since municipalities tend to apply cycle lane or cycle path solutions if the traffic volume is high at the intersection. The majority of the respondents prefer the design solution with cycle path. Further studies under controlled conditions (e.g. in cycling simulator) are needed to investigate in detail cyclist’s behaviour and eye movement when approaching an intersection and at the same time a motor vehicle in the same direction arrives/stands ahead.


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    Titel :

    Interaction between cyclists and right turning motor vehicles at signalised intersections : Field observations and interviews with cyclists


    Beteiligte:

    Erscheinungsdatum :

    2019-12-12


    Medientyp :

    Paper


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Klassifikation :

    DDC:    629



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