(Blue Diamond Road) Corridor Study - Regional Transportation ...

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2. Current Conditions of Study Area RTC SR-160 Corridor Study operation on a street system. As shown in Exhibit 2-11, Level of service ranges from an “A”, the best traffic operation rating, to an “F”, the poorest. Urban roadways are typically considered satisfactory if operating at LOS D, which represents a high-density but stable flow. Small increases in traffic at this level will often cause operational problems. The relationships between vehicle volumes, density, throughput, volume to capacity ratio, and LOS are summarized below. EXHIBIT 2-11: Level of Service (LOS) LOS A LOS B LOS C LOS D LOS E LOS F LEVEL OF SERVICE MAXIMUM DENSITY (PC/MI/LN) MAX SERVICE FLOW RATE MAXIMUM VCR (PCPHPL) A 10 650 0.295 - 0.283 B 16 1,040 0.473 - 0.452 C 24 1,548 0.704 - 0.673 D 32 1,952 0.887- 0.849 E 39-43 2,200 - 2,300 1.000 F Variable Variable Variable For our purposes, we will focus on LOS to determine baseline and future conditions at several locations along SR-160. 6 Based on 2003 traffic count data collected by NDOT, SR- 6 LOS is a function of traffic density (passenger cars per lane-mile) and the service flow rate (passenger cars per hour per lane). 2-20
2. Current Conditions of Study Area RTC SR-160 Corridor Study 160 experiences recurring peak hour traffic congestion, with the highest percentage of failing service occurring between I-15 and Valley View Blvd. Exhibit 2-12 summarizes the level of service (LOS) at five locations along the eastern segment of SR-160 between Valley View Blvd and Las Vegas Boulevard South. The analysis shows LOS for 2003 and projections LOS for 2023, based on 20-year traffic projections. Similar to state roads in most urban areas, SR-160 suffers from traffic congestion as it fills up with commuters traveling to and from work in the morning and afternoon rush hours. In addition, a high volume of heavy duty trucks carrying building materials to construction sites east of Valley View contributes to traffic problems. Additionally, SR-160 has become an increasingly popular travel shed for a growing share of commute trips originating from Pahrump into the heart of Las Vegas. The I-15 interchange and Las Vegas Boulevard during the peak period were at LOS D, indicating a high density of traffic and intermittent breakdowns. As mentioned previously, most of the breakdowns occur between Dean Martin Drive and Valley View Blvd, where insufficient storage capacity on the intersection approaches leads to excessive queuing. In the “no build” alternative, these intersections are projected to operate at or below LOS F or ‘traffic gridlock’ in 2023. The “build” scenario involves reconstruction of the SR-160/I-15 interchange with capacity improvements on the approaches, consistent with the Phase 2A and 2B construction designs shown in Exhibit A. Under the 2030 Build scenario, the capacity improvements planned by NDOT are projected to result in LOS ranging between C and D. With the Flyover alternative, LOS on the southbound ramp of SR-160 improves from a D to a C. EXHIBIT 2-12: Level of Service (LOS) along SR-160 2003 NB 2023 NB* 2003 Build 2023 Build* 2023 Build** Las Vegas Blvd D 1 F D C C NB Ramp Terminal D 2 F C C C SB Ramp Terminal D 3 F C D C Industrial Road C 4 F C D D Valley View B 5 F B D D LOS E or worse for the following locations: * analyzed without flyer 1. NB left, NB thru, SB left, EB left, WB left ** analyzed with flyover 2. NB left, WB thru 3. EB thru, WB left, WB thru 4. NB thru, SB left, EB left, WB left 5. SB left, EB left Source: Nevada Department of Transportation (NDOT) Traffic Operations Analysis Division 2-21
Page 1 and 2: State Route 160 (Blue Diamond Road)
Page 3 and 4: Table of Contents RTC SR-160 Corrid
Page 9 and 10: 1. Executive Summary RTC SR-160 Cor
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Page 59 and 60: 4. Evaluation Methodology RTC SR-16
Page 61 and 62: 4. Evaluation Methodology RTC SR-16
Page 63 and 64: 5. Alternative Development RTC SR-1
Page 83 and 84: 6. SR-160 Corridor Improvement Plan
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6. SR-160 Corridor Improvement Plan
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7. Proposed Park and Ride Facilitie
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8. Estimated System Costs RTC SR-16
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A. Aerial Photographs of Blue Diamo
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B. Candidate Park & Ride Site Data
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C. SR-160 Major Intersections RTC S
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D. RTC Policies and Procedures RTC
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