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    State Library of Oregon: Oregon Documents
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    Project atlas Project atlas, corridor bottleneck operations study - ODOT Region 1

    TXT

    [...]* Construction of NB Auxilary Lane in 2011[...]** Construction of SB Auxilary Lane in 2010


    Corridor Bottleneck Operati[...]
    [...]after the EB I-84 ON Ramp and spreads across all lanes at the[...]
    [...]and issues? the Haines St. exit-ramp in all laneslanes. An ĂĚĚŝƟŽŶĂů ďŽƩůĞŶĞĐŬ[...]
    [...]n a speed of 35 miles per hour or less across all lanes. There
    focused on relieving recurring bott[...]
    [...]Why ODOT Builds Auxiliary Lanes
    Chapter 3: Bottlenecks and Solutions[...]y and compare the potential benefits of auxiliary lanes, ODOT prepared a before‐and‐after
    3.1 CB[...]Auxiliary lanes at interchanges help improve of the ramp area saf[...]ommon Causes and General Locations of Bottlenecks
    lanes) and allow for a more stable flow of traffic at p[...]ss congestion and safety
    that by adding auxiliary lanes in weave/merge sections of freeways the cr[...]
    [...]after the EB I-84 ON Ramp and spreads across all lanes at the[...]
    [...]d mainline traffic (in this area) could cause all lanes to suddenly[...]
    [...]1 I-405: B1 auxiliary lanes[...]
    [...]drivers use the long OR 217 ON Ramp acceleration lanes to[...]ws due to speed differentials with right and left lanes.[...]
    [...]* Construction of NB Auxilary Lane in 2011[...]** Construction of SB Auxilary Lane in 2010
    Corridor Bottleneck Operation[...]
    [...]ulence near the exit gore area in the two outside lanes. The duration[...]e and distance to find gaps and safely weave over lanes. This is[...]
    [...]The additional auxiliary lanes are expected to reduce weaving behaviors and impr[...]weave over lanes. Congestion/queuing would be reduced in most lanes and completely reduced in the[...]two leftmost lanes. It is anticipated that this would result in a 30[...]weave over lanes. Congestion/queuing would be reduced in most lanes. It is anticipated that this would[...]e and distance to find gaps and safely weave over lanes.[...]Congestion/queuing would be reduced in most lanes. It is anticipated that this would result in a 30[...]e and distance to find gaps and safely weave over lanes. Congestion/queuing would be[...]reduced in most lanes. It is anticipated that this would result[...]
    [...]and safely weave over lanes. Of the volumes exiting at I‐84 WB, 37% are fro[...]e and distance to find gaps and safely weave over lanes. Of the[...]would be completely reduced in all lanes. It is anticipated that this would result in a 30[...]exit. Congestion/queuing would be reduced in all lanes and[...]completely reduced in the two leftmost lanes. This auxiliary lane is anticipated to res[...]
    [...]tripe lane markings to provide two dedicated exit lanes to I‐5 SB and[...]affic merging and weaving to get into the correct lanes and from[...]providing clearly marked dedicated exit‐only lanes.

    I‐405 Recommended Projects
    Southbound[...]
    [...]on I‐5 to the north and south of the auxiliary lanes area the[...]n I‐205 to the north and south of the auxiliary lanes area[...]Recommended Projects?
    • Auxiliary lanes used between consecutive entrance and exit ramps[...]s of
    and slow down in designated lanes while reducing interference to the throughway.[...]. Also included on the project
    Auxiliary lanes improve the safety and freeway operations[...]
    [...]lanes. This is expected to reduce congestion, improve l[...]The additional auxiliary lanes are expected to reduce weaving
    corridor. There ar[...]ulence near the exit gore area in the two outside lanes. The[...]
    [...]Further
    * Construction of NB Auxilary Lane in 2011[...]Page | 4‐7

    ** Construction of SB Auxilary Lane in 2010[...]
    [...]mp to Lower Boones Ferry
    Rd. from one lane to two lanes where the right‐most lane is an exit only lane[...]ulence near the exit gore area in the two outside lanes. The
    duration of queuing is expected to be[...]
    [...]‐ramp. The I‐205 entrance‐ramp would be two lanes with the left lane
    being an add lane, conn[...]
    [...]o approximately
    the Haines St. exit‐ramp in all lanes. The cause of the queuing is a combination
    of the[...]ully utilizing the
    entire extent of the auxiliary lanes. An additional bottleneck exists downstrea[...]
    [...]e and distance
    to find gaps and safely weave over lanes. This is expected to reduce congestion,
    im[...]
    [...]es Ferry Rd. to I‐205. Two additional auxiliary lanes would be[...]Ramp
    The additional auxiliary lanes are expected to reduce weaving behaviors a[...]
    [...]gaps and safely weave over lanes. Congestion/queuing would be reduced in most
    bott[...]lanes and completely reduced in the two leftmost lanes. It is anticipated that this
    northbound direction[...]time/distance to find gaps and safely weave over lanes. Congestion/queuing would
    recommended project sum[...]be reduced in most lanes. It is anticipated that this would result in a 30[...]over lanes. Of the volumes exiting at I‐84 WB, 37% are fro[...]distance to find gaps and safely weave over lanes. Of the volumes exiting to I‐84 WB,[...]rs. Congestion would be completely reduced in all lanes.
    WB Entrance Ramp to[...]Congestion/queuing would be reduced in all lanes and completely reduced in the two[...]leftmost lanes. This auxiliary lane is anticipated to res[...]
    [...]e and distance
    to find gaps and safely weave over lanes. Congestion/queuing would be
    reduced in most lanes and completely reduced in the two leftmost lanes. It is
    anticipated that this would result[...]
    [...]e and distance
    to find gaps and safely weave over lanes. Congestion/queuing would be
    reduced in most lanes. It is anticipated that this would result[...]
    [...]e and distance to find gaps
    and safely weave over lanes. Congestion/queuing would be reduced in most[...]Exit Ramp
    lanes. It is anticipated that this would result[...]
    [...]e and distance to find gaps
    and safely weave over lanes. Of the volumes exiting to I‐84 WB, 37%[...]
    [...]e and distance to find gaps and safely weave over lanes.
    Congestion would be completely reduced in all lanes.[...]
    [...]rs. Congestion would be
    completely reduced in all lanes. It is anticipated that this would result[...]
    [...]exit.
    Congestion/queuing would be reduced in all lanes and completely reduced in the
    two leftmost lanes. This auxiliary lane is anticipated to res[...]
    [...]tripe lane markings to provide two dedicated exit laneslanes and from the speed reductions and
    congestion that[...]by providing clearly marked dedicated exit‐only lanes.



    Potential Follow[...]