Hanzas crossing development will reduce total traffic time, total distance, emissions in Riga city, introduce clear road hierarchy and improve traffic conditions on city centre bridges (Vansu bridge reducing traffic by 19%, Akmens bridge by 4%). The total length of the Hanzas crossing will be approx. 2 km from tunnel mouth to tunnel mouth. At a speed of 50 km per hour, this will offer motorists a journey time of approximately 2 - 3 minutes through the tunnel.
Hanzas crossing development will reduce total traffic
time, total distance, emissions in Riga city, introduce clear road hierarchy
and improve traffic conditions on city centre bridges (Vansu bridge reducing
traffic by 19%, Akmens bridge by 4%). The total length of the Hanzas crossing
will be approx. 2 km from tunnel mouth to tunnel mouth. At a speed of 50 km per
hour, this will offer motorists a journey time of approximately 2 - 3 minutes
through the tunnel.
Hanzas crossing surrounding area includes future
development objects with total projected area more than 3 mln m2 of
GFA and total generated traffic flow 12400 A/h in morning peak and 19100 A/h in
evening peak.
The main purposes of transportation impact study are:
- Provide
reliable guidance on short- and long-range planning of Hanzas crossing
surrounding territory and improvements necessary to permit the
transportation system to satisfactorily accommodate Hanzas crossing
traffic and traffic generated by future development objects.
- Assist
transportation planners in making critical land use site planning
decisions regarding traffic, other modal needs and transportation aspects
for Hanzas crossing surrounding territory.
- Evaluate
economically feasible types of Hanzas crossing.
For transport impact study and modelling was used Riga
Transport Digital Simulation Model, which includes several corrections, such
as: future development objects and road network structure improvements.
Hanzas crossing as extension of Hanzas street should
connect Daugava River both banks with connections on Kipsala and Daugavgrivas
street. During the project, Hanzas crossing several variants were analysed
(short tunnel, long tunnel and low bridge with a lifting span).
All suggested variants for Hanzas crossing were
evaluated and analysed. And main results such as total travel time, total
travel distance, total emission CO, Nox, HC were received:
5 zones (the whole Riga Transport Digital
Simulation Model, Riga city ring, Riga centre ring, RVC AZ – Riga Historical
Centre and It’s Protection Zone Territory, Project study area) were chosen
for main result collection:
Analysing received main results, as the best variant
is recommended short tunnel variant.
In frame of project were evaluated and analysed two
possible additional Northern corridor connections with Riga centre ring in
vicinity of Duntes street and Gaujas street.
Macromodeling results showed that connection in
vicinity of Duntes street will improve the best way accessibility of future
building area to Northern corridor and by 4% and 6% in morning and evening peak
hours accordingly.
Summarizing the simulation results for short tunnel
variant for 2025 year it has been recommended that is necessary and sufficient
only one perspective connection development in vicinity of Duntes street –
Zirnu Street connection.
It’s also important to note that emission results for
this variant were the best ones
As the macromodeling results showed an unallowable
level of service on several junctions in study area, it was recommended to
reduce the amount of future development so that study area’s generated flow would
be decreased by 20%.
Using macro- and micromodeling the main junctions and
road section were analysed and necessary reconstruction’s events were
recommended.