Samband mellan körstil och åkkomfort: förbättringspotentialen inom kollektivtrafiken. Kortversion

Download
Karl Kottenhoff
Jerker Sundström

Ride comfort constitutes part of the total comfort experience of a journey. It is a result of the interaction between the characteristics of the infrastructure and those of the vehicle, and not least a result of the driver’s handling. Poor ride comfort generally leads to low attractiveness of the public transportation system, mainly due to travelers being less relaxed and even unableto use the traveling time for reading. The motions of the vehicle can cause some passengers todevelop motion sickness and even tripping or fall accidents occur due to difficulty to keepbalance.The project aims to improve the knowledge level for the relationship between drivers' drivingstyle and ride comfort, including motion sickness. Comparisons of the ride comfort are madebetween bus and rail services and differences between drivers are also studied. A concretegoal is to provide basis for driver training and new support systems for drivers. Differencesand similarities between "eco driving" and good ride comfort are briefly addressed.The project began with interviews of bus and subway travelers and with measurements ofvehicle motions during normal service operation. In the autumn 2009, in-field experimentswere performed with test subjects who evaluated different driving styles in terms of comfort.The results showed that heavy braking, cornering forces, longitudinal jerks and uneven speedmean a lot to passengers' valuation. The results from these experiments show that in all thesedriving styles give rise to significant decreases of the perceived comfort.Correlation and regression analysis was then used to develop indicators for quantitativeanalysis of travel with public transport. The four indicators that were produced essentiallyreveal the sensitivity for; 1) longitudinal acceleration and braking, 2) longitudinal jerks, 3)cornering forces, and 4) uneven speed, so-called "Pump driving". Further, these indicators were used to assess some hundred measurement runs with accelerometers in both buses andmetro cars in normal service.

MEET US


7
Dec

Shipping and the environment – research meets reality

Centre for Transport Studies (CTS) in co-operation with Ports of Stockholm invite you to the seminar Shipping and the environment – research meets reality.

LATEST NEWS


2017-10-26

Simulation of cut-in by manually driven vehicles in platooning scenarios

A study in a VTI-driving simulator has showed that a platoon will be able to handle a cut in from a manually driven car. The results of this study have recently been presented at two conferences in Japan.


2017-10-16

ERPUG Forum

The five-year anniversary of European Road Profile Users' Group (ERPUG) Forum will take place at Ramboll head quarter, Copenhagen, Denmark October 19-20, 2017.


2017-09-29

Self-driving buses in Sweden next year?

A self-driving, fossil-free bus. This idea might become reality through a forthcoming collaborative project involving the Swedish National Road and Transport Research Institute (VTI), Linköping University and several other participants. The project group aim...


2017-09-29

New climate-proof solutions for hard surfaces in cities

High-density road infrastructure that emphasise maximum durability and minimum maintenance create inflexible systems, which put increased stress on urban trees and lead to increased risk for flooding. Over the past five years, the ‘Climate-proof solutions for...


2017-09-29

VTI is preparing for automated vehicles

Automation of traffic systems will lead to major changes. The European Union’s (EU) CoEXist research project began in June 2017 with the aim of preparing cities and road operators for the introduction of self-driving vehicles. The Swedish National Road and...


2017-07-05

Vehicle Driver Monitoring: sleepiness and cognitive load

To prevent road crashes it is important to understand driver related contributing factors, which have been suggested to be the critical reason in 94 per cent of crashes. The overall aim of the project Vehicle Driver Monitoring has been to advance the...