DRAFT MEMORANDUM. Truck Maneuvering Analysis WC

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100 Pringle Avenue, Suite 600 Walnut Creek, CA 94596 (925) 930-7100 Fax (925) 933-7090 www.fehrandpeers.com

DRAFT MEMORANDUM

Date: October 15, 2009

To: Les Dutton and Blair Horst, LBNL

From: Ryan McClain

Subject: Truck Maneuvering Analysis

WC08-2572

Fehr & Peers evaluated large truck maneuvering throughout the LBNL roadway system. The purpose of this evaluation was to determine where trucks of varying sizes will cross the centerline of the road. This memorandum summarizes our findings.

Methodology

The AutoTurn1 software package was used for this evaluation. This software allows vehicle turning paths to be overlaid onto CAD drawings, tracing the paths of all wheels as well as the path of any overhanging part of the vehicle. The following American Association of State Highway Transportation Officials (AASHTO) standard vehicles were evaluated:

• AASHTO SU Truck: 30 foot long single unit truck (similar to current LBNL shuttles) • AASHTO Bus-40: 40 foot long bus

• AASHTO WB-40: Semi truck with 33 foot long trailer (43.5 foot total length) • AASHTO WB-50: Semi truck with 42.5 foot long trailer (53 foot total length)

Additionally, the California Legal-50 Semi truck with 45 foot long trailer (65 foot total length) was evaluated. Detailed dimensions of each of these vehicles are shown on Figure 1.

An AutoCAD drawing of the Lab along with imagery from Google Earth were used to determine the horizontal alignment of the roadway, as well as shoulder and centerline stripe locations. Lane widths were also spot checked in the field.

Each truck was evaluated on the roadways and through intersections throughout the Lab to determine if the vehicle fits on the roadway and if any part of the vehicle crosses the centerline of the roadway. It was assumed that the vehicle could cross over the white shoulder stripe if there was no adjacent parking to avoid crossing the centerline.

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Les Dutton, Blair Horst October 15, 2009 Page 2 of 2

Limitations

The Autoturn software only analyzes turning movements in the horizontal plane and does not account for vertical information, such as steep terrain or abrupt grade changes. These factors may also limit truck maneuvering and would need to be evaluated further.

The AutoCAD drawing of the Lab only shows edges of pavement and does not include centerline striping, shoulder striping or accurate curb and gutter locations. Thus, Google Earth imagery was used. In certain locations this imagery is limited by trees or defects. These locations were field measured; however, if more precise analysis of certain intersections is needed, it is recommended that a detailed survey of the area, including striping, be completed.

Results

The results of the evaluation are presented on Figures 2 through 6, with additional notes on Figure 7. These figures show locations where each vehicle can travel with and without crossing over the centerline.

As shown on the figures, the SU Truck can maneuver through almost all roadways without crossing the centerline with the exception of a few turns through intersections. By contrast, the CA Legal-50 truck crosses the centerline at almost every location.

Currently the Lab uses a pilot car program to guide large trucks that cross over the centerline. At many of the locations, eliminating parking would allow more room for trucks to maneuver around curves; however, the loss of parking may be undesirable. Converting roadways from two-way to one-way operation would allow for increased lane width which would also allow more maneuvering space.

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A 1 5 5 5 A 5 5 0 6 3 6 4 6 1 5 8 8 65 F 0 5 D 0 5 A 0 5 E 0 5 C0 5 B5 6 65 A 0 5 0 7 A 0 7 4 5 A 4 5 29 6 0 8 7 3 43 5 3 3 4 ₄₅ ₄₈ 48A 0 4 41 4 1 4 7 ₁₆ 5 A 5 2 8 5 A 8 5 7 4 3 5 7 2 7 1 1 6 63 9 7 A 7 7 1 3 6 7 8 7 9 6 75A 5 7 B 5 7 4 7 4 8 3 8 B 5 8 B58 58 3 7 2 6 6 6 2 7 7C2 A2 7 B2 7 B 1 7 18 28 A 0 8 6 2 6 4 A 6 4 2 5 65 44 1 7 A 1 7 0 9 7 7 2 B 0 5 5 2 y rr e b w a rt S n o y n a C e t a G y rr e b k c a l B n o y n a C e t a G k a e P y lz zi r G e c n e r w a L f o ll a H e c n e ic S CY C L OT R O N R OA D C Y C L O T R O N R O D A L A_W R_E N C E R O A D S EA B O R G R O A D A L V A R E Z R O A D C H A M BE R L A IN RO AD M c M IL L A N R O A D M c M I L L A N R O A D Mc M I LL A N R OA D G LA S E R R OA D LE E RO AD CA LV I N RO D L A WR E N C E R O A D L A WR E NC E R O A D L A W R E N C E RO A D O R E R G E S D A C E_{N T} E N_N I A_L D R I_V E C Y C L O T_{R O N} R O A_D CE NT EN NI A L D R I VE Gate 67 A U4 U2 U3 U1 U5 LR2 S T1 T2 V W GL1 LR1 LR1 R Q P P N4 X Y Z N3 N3 N3 N1 K2 K1 L MM1 M2 M1 CH2 CH1 C D B AL1 A H1 G1 G2 H2 G3 E F I N Not to Scale LEGEND = Vehicle Route

= Vehicle Cannot Complete Turn Movement without Crossing Centerline

SU TRUCK

LBNL Traffic Engineering Services

Figure 2 October 2009

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BUS – 40

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WB – 40

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WB – 50

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CA LEGAL – 50

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A 1 5 5 5 A 5 5 0 6 3 6 4 6 1 5 8 8 65 F 0 5 D 0 5 A 0 5 E 0 5 C0 5 B5 6 65 A 0 5 0 7 A 0 7 4 5 A 4 5 29 6 0 8 7 3 43 5 3 3 4 ₄₅ ₄₈ 48A 0 4 41 4 1 4 7 ₁₆ 5 A 5 2 8 5 A 8 5 7 4 3 5 7 2 7 1 1 6 63 9 7 A 7 7 1 3 6 7 8 7 9 6 75A 5 7 B 5 7 4 7 4 8 3 8 B 5 8 B58 58 3 7 2 6 6 6 2 7 7C2 A2 7 B2 7 B 1 7 18 28 A 0 8 6 2 6 4 A 6 4 2 5 65 44 1 7 A 1 7 0 9 7 7 2 B 0 5 5 2 y rr e b w a rt S n o y n a C e t a G y rr e b k c a l B n o y n a C e t a G k a e P y lz zi r G e c n e r w a L f o ll a H e c n e ic S CY C L OT R O N R OA D C Y C L O T R O N R O D A L A_W R_E N C E R O A D S EA B O R G R O A D A L V A R E Z R O A D C H A M BE R L A IN RO AD M c M IL L A N R O A D M c M I L L A N R O A D Mc M I LL A N R OA D G LA S E R R OA D LE E RO AD CA LV I N RO D L A WR E N C E R O A D L A WR E NC E R O A D L A W R E N C E RO A D O R E R G E S D A C E_{N T} E N_N I A_L D R I_V E C Y C L O T_{R O N} R O A_D CE NT EN NI A L D R I VE Gate 67 A U4 U2 U3 U1 U5 LR2 S T1 T2 V W GL1 LR1 LR1 R Q P P N4 X Y Z N3 N3 N3 N1 K2 K1 L MM1 M2 M1 CH2 CH1 C D B AL1 A H1 G1 G2 H2 G3 E F I

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Westbound trucks and buses were observed crossing double yellow line and leaving roundabout due to narrow lane.

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Roadway passes under building structure with

limited clearance.

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Insufficient image and CAD data at these locations. Additional survey may be required.

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Single Unit (SU) delivery truck observed crossing double yellow line while making right turn. However, analysis shows SU truck able to complete turn within lane.

NOTES:

N Not to Scale