Contract notice: Research and development services and related consultancy services Tender

Procurement Summary

Country : Germany

Summary : Contract notice: Research and development services and related consultancy services

Deadline : 10 Dec 2018

Other Information

Notice Type : Tender

TOT Ref.No.: 28103749

Document Ref. No. : 480268-2018

Competition : ICB

Financier : Self Financed

Purchaser Ownership : -

Tender Value : Refer Document

Purchaser's Detail

Purchaser : BUNDESANSTALT FÜR STRAßENWESEN, REFERAT Z5
Office Name: Bundesanstalt für Straßenwesen, Referat Z5
Address: Brüderstraße 53
Town: Bergisch Gladbach
Postal Code: 51427


Germany
Email :forschungsvergabe@bast.de
URL :http://www.bast.de

Tender Details

Object of the contract
Research and development services and related consultancy services

Description: Contract notice: Research and development services and related consultancy services

Authority Type: Ministry or any other national or federal authority
Contact Nature: Services
Procedure: Open procedure
Document: Contract notice
Regulation: European Union, with participation by GPA countries
Award criteria: The most economic tender
CPV code: 73000000, 73000000
CPV Description: Refresh of Roundabout Capacity Calculation Methods Reference Number: Z5mue - FE 02.0425 / 2018 / FGB

FE 02.0425 / 2018 / FGB Updating of roundabout capacity calculation procedures.

FE 02.0425 / 2018 / FGB FE 02.0425 / 2018 / FGB

"Updating the calculation methods for the capacity of roundaboutsn "

The procedures for evaluating performance and the capacity functions for single- and two-lane roundabouts described in the HBS 2015 are based on knowledge gained in several research projects in the early 1990s At that time, not many roundabouts existed that were unrestricted as objects of investigation suitable, ie the bis were used to the capacity limit. Furthermore, comparatively few influencing factors were included in the investigations, i.a. the number of lanes in the circular lane and driveway and elements of geometric design. Due to current influences such as the tightening of the vehicle drivers to roundabouts and the more powerful engine could higher capacityThe impact of pedestrians and cyclists on the performance of roundabouts is also important. The common formulas for this come from the early nineties and are based on a sample of two roundabouts. For the impact of pedestrians on the roundaboutn is a concept that was developed for mini-roundabouts. It should be checked whether this is also applicable to other forms of roundabouts.

The importance of the outbound traffic for the capacity of the adjacent access road is also not sufficiently clarified. Here, both a positive and a negative influence on the capacity is conceivableIn addition, since temporary backpressures within the circular lane cause a reduction in capacity, the interaction of the individual node arms must also be considered. Because of these open questions and the high importance of the roundabouts, an updating of the calculation methods should take place with consideration of the mentioned aspectse The application for the research contract is subject to the attached conditions of participation
Internet address (URL): http://www.bast.de

Documents

 Tender Notice