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Wyszukujesz frazę "roads exit" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Funkcjonalność połączeń dróg leśnych z drogami publicznymi i innymi drogami wewnętrznymi
Functionality of the connections of forest roads with public and other internal roads
Autorzy:
Trzciński, G.
Młynarczyk, P.
Powiązania:
https://bibliotekanauki.pl/articles/979571.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
nadlesnictwa
uklad komunikacyjny
drogi lesne
drogi publiczne
drogi wewnetrzne
polaczenia drog
funkcjonalnosc
public roads
forest area
internal road
roads exit
roads junction
Opis:
The forestry communication system is included in larger transport areas through forest roads connections mainly with public roads, but also with internal ones. The possibility of realization of these connections and defining their technical parameters is very important, as it concerns the cooperation of various property owners as well as interference of the State Forest units into other land (road lane). The aim of the research was to analyse the exits, i.e. connections of forest roads with public or other internal roads, necessary to ensure the functioning of the communication system of the forest district. We investigated existing as well as the planned to be built exits. The research was carried out based on the developed information sheet regarding the scale and scope of issues related to the operation of the exits. We received back 412 information sheets and analysed the data according to the category of the road and the regional directorates of the State Forests (RDSFs). The total number of functioning exits the State Forests equals 108,239. The exits number varies from 2505 in RDSF Piła to 12,341 in RDSF Olsztyn and depends on the number of forest districts and their area, which is confirmed by the high number of exits in RDSF Bialystok, Szczecin and Wroclaw (tab. 1). The highest number of exits (53,455) was found for junctions with commune roads, and then district roads (31,190). A large number of exits (8111) was recorded for roads that do not have the status of a public road. More than a half of the surveyed forest districts (262) demonstrated the need to build 9072 new exits from various road categories, indicating primarily exits from communal roads and district roads (tab. 2). No need of building the exits to national roads was exhibited by 320 forest districts, and by 253 units for regional, 183 for district and 211 for communal roads.
Źródło:
Sylwan; 2019, 163, 10; 862-871
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Horizontal curve radii versus turning abilities of vehicle combinations for timber transport
Autorzy:
Czerniak, A.
Trzciński, G.
Powiązania:
https://bibliotekanauki.pl/articles/101626.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
forest roads
horizontal curve radius
timber transporting vehicles
exit parameters
Opis:
State Forests make various road investments in cooperation with local self-governments. Jointly modernized roads facilitate local transport for both parties. The prerequisite is proper selection of technologies and project parameters for the modernized roads. The paper aimed to analyze the minimum horizontal curve radii for various elements of roads (on exits, road junctions and vehicle maneuvering areas) depending on the vehicle combinations for timber transport. The scope of works comprised: - analysis of technical conditions for public roads; - analysis of kinematic relationships for vehicle combinations for timber transport; - determining the types of vehicle combinations for timber transport; - empirical determination of the turning abilities of timber haulage vehicle combinations and fire engines. Potential vehicle combinations used for timber transport were determined on the basis of data collected from the customers. Tests of turning abilities of vehicle combinations used for long and short timber transport and for forest fire fighting used by the State Fire Service units were conducted on a maneuvering area, at the curves with radius R = 11.0 m; 13 and 15 m and steering angle α = 90º. A combination of a truck with a trailer or steered cart revealed the best turning parameters. It was demonstrated that the rounding radius R = 11.0 m without widening of a 3.5 m wide road may be used only when entering very wide public roads with a not so heavy traffic. A circular curve rounding a with a minimum radius R = 13.0 and in specific cases with R = 15.0 m.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2018, II/1; 263-275
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
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