RTCSNV CRASH ANALYSIS REPORT

Transcription

1 RTCSNV CRASH ANALYSIS REPORT TABLE OF CONTENTS Summary... 3 Crash Types... 4 Time and Day of Crashes... 7 Crash Factors... 9 Fatalities Driver s Behavior Crash Locations Non-Motorized Crashes MAP21 Safety Performance Measure Baseline

2 TABLE OF FIGURES Figure 1: Fatal, Incapacitating Crash Frequency Figure 2: Percentage of Crash SEVERITY by Crash Types Figure 3: Crash Type for Injury Crashes and All Crashes Figure 4: Average Crashes Per Hour by Time of Day Figure 5: Average Crashes Per Day by Day of the Week Figure 6: Abnormal Driver's Factors Figure 7: High Percentage Alcohol Crash Heat Map Figure 8: Drug Related Crash Heat Map Figure 9: Crash Frequency Hotspot Ranks Figure 10: Fatal Crash Hotspots Figure 11: Serious Injury Crash Hotspots Figure 12: Top 50 Sever Crash Segments Figure 13: Average Bicycle and Pedestrian Crashes per Month Figure 14: Total Number of Bicycle and Pedestrian Crashes by Time of Day Figure 15: Non-Motorized Fatal and Serious Injury Heat Map LIST OF TABLES Table 1: Crash Types... 4 Table 2: Number of Crashes by Crash Type and Severity Table 3: Top 10 Primary Crash Factors by Severity, Table 4: Fatalities by Crash Type Per 100,000-Population Table 5: Top 10 Primary Crash Factors for Fatal Crashes Table 6: Driver's Factors Table 7: Driving Under the Influence Table 8: Crash Severity Rank Table 9: Average Number of Fatalities Per Year Table 10: Average Number of Fatalities Per Million VMT Per Year Table 11: Average Number of Serious Injuries Per Year Table 12: Average Number of serious Injuries per million VMT Per Year Table 13: Average of Non-MotorizeD Serious injuries and Fatalities Per Year

3 Fatal and Serious Injury Crashes All Crashes SUMMARY This report summarized the crashes took place from 2011 to 2015 that were reported to Nevada Department of Transportation (NDOT) 1. The report tackled the roadway safety issues by examining 1. Overall Crash Statistics 2.Non-Motorized Crashes 3.Driver s Behavior 4.Crash Locations. The result can be used to develop the strategies in policy, education, law reinforcement and roadway projects to improve the roadway safety. From 2011 to 2015, there were about 35,000 crashes per year in average in Clark County. Figure 1 shows the number of crashes reported. The significant drop in 2014 is affected by the Las Vegas Metropolitan Police Department stopped reporting to the non-serious crashes in due to the funding shortage. There is also a slight downward trend for serious injury crashes. FIGURE 1: FATAL, INCAPACITATING CRASH FREQUENCY , ,000 40,000 35,000 30,000 25,000 20,000 15,000 10,000 5, Fatal Crashes Serious Injury Crashes All Crashes 40,232 39,474 38,832 28,222 28,669-1 All the records are subjected to be revised or updated due to the reporting process. Not all the crash records are geocoded. 3

4 CRASH TYPES Four different categories of crashes were identified in the crash database (Table 1). Different crash types were grouped in each category in order to set apart different crashes characteristics. TABLE 1: CRASH TYPES Category Passenger Vehicle Commercial Motor Cycle Non-Motorized Types One Car, Two Cars, Three or More Cars Truck, Bus Motor Cycle Bicycle, Pedestrian The severity levels of the crashes were defined using Nevada s KABCU Injury Classification Scale System: 1. Fatal (K): The code is entered if a victim is pronounced dead as a result of the crash. 2. Incapacitating (A): This means that the victim must be carried or otherwise helped from the scene. 3. Non-Incapacitating (B): If the victim has visible signs of injury, either in a physical or mental sense, but is judged able to walk away from the scene without help. 4. No Injury (C)/Unknown (U): No evident of injury or not reported. As shown in Table 2, in , passenger vehicle crash type is the most common crash type (89%-91%), then the non-motorized crashes (4-6%), commercial-vehicle crashes (4%), and Motor- Cycle Crashes (1%). TABLE 2: NUMBER OF CRASHES BY CRASH TYPE AND SEVERITY Crash Type Fatal Incapacitating Severity Non- Incapacitating No Injury /Unknown Annual Total 4 Percent of Annual One Car ,217 3,113 4,474 11% Two Cars ,754 18,562 28,584 71% Three or More Cars ,993 1,429 3,515 9% Truck ,137 3% Bus % Bicycle % Motor Cycle % Pedestrian % Total ,872 24,514 40,232 Percent of Annual Total 0.3% 1.8% 37.0% 60.9% One Car ,308 3,058 4,524 11% Two Cars ,040 17,687 27,992 71% Three or More Cars ,948 1,376 3,395 9%

5 Crash Type Fatal Incapacitating Severity Non- Incapacitating No Injury /Unknown Annual Total Percent of Annual Truck ,078 3% Bus % Bicycle % Motor Cycle ,001 3% Pedestrian % Total ,166 23,447 39,474 Percent of Annual Total 0.4% 1.8% 38.4% 59.4% One Car ,373 3,018 4,559 12% Two Cars ,994 17,108 27,347 70% Three or More Cars ,088 1,218 3,377 9% Truck ,068 3% Bus % Bicycle % Motor Cycle ,063 3% Pedestrian % Total ,284 22,671 38,832 Percent of Annual Total 0.5% 1.8% 39.4% 58.4% One Car ,271 2,888 4,314 15% Two Cars ,453 9,266 17,975 64% Three or More Cars , ,938 10% Truck % Bus % Bicycle % Motor Cycle % Pedestrian % Total ,415 13,943 28,222 Percent of Annual Total 0.6% 2.5% 47.5% 49.4% One Car ,457 2,997 4,609 16% Two Cars ,765 8,872 17,874 62% Three or More Cars , ,137 11% Truck % Bus % Bicycle % Motor Cycle % Pedestrian % Total ,957 13,849 28,669 Percent of Annual Total 0.6% 2.4% 48.7% 48.3% 5

6 Likelihood of getting injured varies from different crash types; however, motor cycle, bicycle and pedestrian crashes are more likely to result in fatal and serious injury (Figure 2). FIGURE 2: PERCENTAGE OF CRASH SEVERITY BY CRASH TYPES Pedestrian Bicycle Motor Cycle Bus Fatal Serious Injury Non-Incapacitating No Injury/Unknown Truck One Car Two Cars Three or More Cars 0% 20% 40% 60% 80% 100% Furthermore, Figure 3 shows the bicycle, motor cycle, and pedestrian crashes are about 6% of total crashes, but they consist of 12% of all injury crashes. FIGURE 3: CRASH TYPE FOR INJURY CRASHES AND ALL CRASHES All Crashes 6 % Injury Crashes 12% 0.0% 10.0% 20.0% 30.0% 40.0% 50.0% 60.0% 70.0% 80.0% 90.0% 100.0% Pedestrian Bicycle Motor Cycle Bus Truck Three or more Cars Two Cars One Car 6

7 TIME AND DAY OF CRASHES On the weekdays, number of crashes peaks at 7:00 a.m. and 5:00 p.m. (Figure 4). The peaks coincide with the commute peak hours identified in the 2014 household travel survey and the traffic counts. The weekend pattern is similar to the weekday pattern, except the number of crashes is much lower during the morning peak period. The early mornings during the weekends have higher number of crashes due to the impaired driving 2. FIGURE 4: AVERAGE CRASHES PER HOUR BY TIME OF DAY :00 PM 8:00 PM 6:00 PM 4:00 PM 2:00 PM 12:00 PM 10:00 AM 8:00 AM 6:00 AM 4:00 AM 2:00 AM 12:00 AM Weekend Weekend 2 S17.8, Nevada Strategic Highway Safety Plan, Nevada Department of Transportation 7

8 It averages 96 crashes per day during , the average is higher on the Fridays and lower on the Sundays (Figure 5) FIGURE 5: AVERAGE CRASHES PER DAY BY DAY OF THE WEEK Saturday Friday Thursday Wednesday Tuesday Monday Sunday

9 CRASH FACTORS Crash factors are the main causes of the reported crashes. When the cause of a crash is not reported, it s coded as Others % of the crashes do not have the cause of the crashes associate with them. For the crashes with the factors associated, Failed to Yield Right of Way (15.56%) is the most common factor from the crashes reported in year 2011 to 2015 (Table 3) TABLE 3: TOP 10 PRIMARY CRASH FACTORS BY SEVERITY, RANK Primary Factor Fatal Incapacita ting Severity Non- Incapacita ting No Injury / Unknown Total UNKNOWN ,690 15,846 27,403 FAILED TO YIELD RIGHT OF WAY ,264 10,471 25,766 OTHER IMPROPER DRIVING ,552 12,432 22,233 FOLLOWED TOO CLOSELY ,977 11,699 21,774 FAILURE TO KEEP IN PROPER LANE OR RUNNING OFF ROAD ,062 13,516 21,250 DRIVING TOO FAST FOR CONDITIONS ,133 7,175 12,538 UNSAFE LANE CHANGE ,032 9,368 12,464 DISREGARDED TRAFFIC SIGNS, SIGNALS, ROAD MARKINGS ,446 3,220 9,036 HIT AND RUN ,537 5,548 8,214 MADE AN IMPROPER TURN ,718 3,080 4,862 9

10 FATALITIES After 2011, as the economic actives started to recover in the region, fatal crash per capita also increased from 2012 to 2015 (Table 4). Among all the crash types, pedestrian and motor cycle crashes are more likely to result in fatalities. The number of fatality is 18% lower than the national average in TABLE 4: FATALITIES BY CRASH TYPE PER 100,000-POPULATION Year One Car Two Cars Fatal Crashes by Type Per 100,000 Population Three or More Cars Bus Truck Motor Cycle Bicycle Pedestrian Crashes Per 100,000 Population Fatalities Fatalities Per 100,000 Population National Average Table 5 shows the top factors that caused fatal crashes; the most common factor is speeding. Rank TABLE 5: TOP 10 PRIMARY CRASH FACTORS FOR FATAL CRASHES Primary Factor Fatal Injury Percentage of Total 1 UNKNOWN % 2 EXCEEDED AUTHORIZED SPEED LIMIT % 3 FAILURE TO KEEP IN PROPER LANE OR RUNNING OFF ROAD % 4 FAILED TO YIELD RIGHT OF WAY % 5 DISREGARDED TRAFFIC SIGNS, SIGNALS, ROAD MARKINGS 60 8% 6 DRIVING TOO FAST FOR CONDITIONS 46 6% 7 HIT AND RUN 29 4% 7 WRONG SIDE OR WRONG WAY 22 3% 9 OTHER IMPROPER DRIVING 20 3% 10 OPERATING VEHICLE IN ERRATIC, RECKLESS, CARELESS, NEGLIGENT OR AGGRESSIVE MANNER 11 1% 3 NHTSA Quick Fact Sheet 2015 and

11 DRIVER S BEHAVIOR 18% of the drivers involved in crashes were reported with an abnormal physical condition while 82% of the drivers were either reported to be normal or unknown. TABLE 6: DRIVER'S FACTORS Driver Factor Annual Average Percentage Normal 25, % Unknown 3, % Alcohol 2, % Distracted 1, % Others 1, % Drug % Fell Asleep % Illness % Obstructed View % Impairment % Among the 18% of the abnormal drivers, 45% of them were driving under the influence (DUI) either effected by drug or alcohol, 29% of them were distracted FIGURE 6: ABNORMAL DRIVER'S FACTORS ILLNESS 3% FELL ASLEEP 5% OBSTRUCTED VIEW 1% IMPAIRMENT 1% OTHERS 16% DRUG 7% ALCOHOL 38% DISTRACTED 29% 11

12 Table 7 below shows the severity of DUI related crashes. A drug related crash gets 10 times more chance to result in fatal than other non-dui related crashes. Year DUI Fatal Serious Injury TABLE 7: DRIVING UNDER THE INFLUENCE Injury Non-Injury Sum Percentage 2011 Drug % Alcohol % Others % 2012 Drug % Alcohol % Others % 2013 Drug % Alcohol % Others % 2014 Drug % Alcohol % Others % 2015 Drug % Alcohol % Others % DUI Crashes Result in Fatal Crashes Result in Serious Injury Drug 3.00% 3.70% Alcohol 1.60% 3.90% Others 0.30% 1.90% Figure 7 below shows the high-percentage-dui-related crashes locations. Figure 8 shows locations with most drug related crashes. Both drug and alcohol related crashes show the similar concentration pattern near the strip area. 12

13 FIGURE 7: HIGH PERCENTAGE ALCOHOL CRASH HEAT MAP

14 FIGURE 8: DRUG RELATED CRASH HEAT MAP

15 CRASH LOCATIONS Hotspot analysis method is utilized in this section in order to determine the potential locations for the safety studies. 630, ft by 250ft grids were created and filled in the study area. Crash counts, fatal crashes, and serious injuries were then aggregated into each grid. In Figure 9: Crash Frequency Hotspot Ranks , top 20 locations with most of crashes were identified. 10 of them are on I-15 or near the ramps, 3 of them are on US95, 3 of them are on I-215, and the rest are in the Downtown and Strip area. In Figure 10: Fatal Crash Hotspots and Figure 11: Serious Injury Crash Hotspots , the hotspots for the most frequent fatal and serious injury crashes were identified. City of North Las Vegas seem to have the most frequent serious injury hotspot in its jurisdiction. 15

16 FIGURE 9: CRASH FREQUENCY HOTSPOT RANKS

17 FIGURE 10: FATAL CRASH HOTSPOTS

18 FIGURE 11: SERIOUS INJURY CRASH HOTSPOTS

19 Top 50 locations were identified using the severity index 4 on each segment. The location segments were defined using Nevada Department of Transportation s Crash Analysis Network. TABLE 8: CRASH SEVERITY RANK Rank Location Street Name Intersection 1 Intersection 2 Fatal Serious Injury Severity Injury Non- Injury / Unknown Severity Index 1 I-15N OUTER W SAHARA W CHARLESTON BLVD ,573 2 I-15N INNER 5 W SAHARA I-15N OUTER 6 DESERT INN RD SAHARA AVE I-15N OFF RAMP W SAHARA E CHARLESTON BLVD I-15 N NELLIS BLVD I-95S TO I-15 RAMP N NELLIS BLVD E CHARLESTON BLVD E LAKE MEAD BLVD E TROPICANA AVE I-15 I I-15S MLK OFF RAMP W WYOMING AVE I-15S MLK OFF RAMP I-95S TO I-15 RAMP W SAHARA AVE S JONES BLVD S RANCHO DR W FLAMINGO RD S JONES BLVD I I-515 OUTER BOULDER HWY E CHARLESTON BLVD E FLAMINGO RD PARADISE RD I SPRING MOUNTAIN RD ALDEBARAN AVE INDUSTRIAL RD S RAINBOW BLVD W TROPICANA AVE W FLAMINGO RD Severity Index = 12 Fatal Crashes + 6 Serious Injury Crashes + 3 Non-Incapacitated Crashes + 1 All other Crashes. If the segment length is longer than 1 mile then the index is equal to the index divided by the length. 5 The segment between two highway exits that share the same exit number 6 The segment between two highway exits that share different exit numbers 19

20 Rank Location Street Name Intersection 1 Intersection 2 Fatal Serious Injury Severity Injury Non- Injury / Unknown Severity Index 17 SPRING MOUNTAIN RD INDUSTRIAL RD LAS VEGAS BLVD S I-15S ON RAMP W TROPICANA AVE I-215S I-15 VALLEY VIEW BLVD I-15N OFF RAMP LAS VEGAS BLVD S S JONES BLVD W TROPICANA AVE W FLAMINGO RD W SAHARA AVE S RAINBOW BLVD S JONES BLVD S NELLIS BLVD E FLAMINGO RD E SAHARA AVE W SAHARA AVE INDUSTRIAL RD LAS VEGAS BLVD S E CHARLESTON BLVD LAS VEGAS BLVD S N EASTERN AVE W SAHARA AVE LAS VEGAS BLVD S S EASTERN AVE BOULDER HWY FLAMINGO RD I US95S OUTER S VALLEY VIEW BLVD S RANCHO DR N JONES BLVD US95 W SMOKE RANCH RD W SAHARA AVE S RANCHO DR I W ANN RD PAINTED MIRAGE RD N TENAYA WAY E FLAMINGO RD I-515 BOULDER HWY E CRAIG RD LOSEE RD I I-15N FLAMINGO RD I W CHEYENNE AVE US95 N RANCHO DR US95 INNER RANCHO DR

21 Rank Location Street Name Intersection 1 Intersection 2 Fatal Serious Injury Severity Injury Non- Injury / Unknown Severity Index 37 I-15S W OAKEY BLVD DESERT INN RD E CRAIG RD N LAMB BLVD LAS VEGAS BLVD N I-15S E BONANZA RD W WASHINGTON AVE I-515 OUTER LAS VEGAS BLVD N N EASTERN AVE BLUE DIAMOND RD ARVILLE ST I W FLAMINGO RD S RAINBOW BLVD S JONES BLVD S RANCHO DR W CHARLESTON BLVD W MESQUITE AVE S LAMB BLVD COLORADO AVE E CHARLESTON BLVD BOULDER HWY E TROPICANA AVE E HARMON AVE E LAKE MEAD BLVD I-15 LAS VEGAS BLVD N I-15N CD2 I-215 E TROPICANA AVE S NELLIS BLVD E SAHARA AVE E CHARLESTON BLVD US95S OUTER N JONES BLVD S VALLEY VIEW BLVD S RAINBOW BLVD W SAHARA AVE W CHARLESTON BLVD

22 FIGURE 12: TOP 50 SEVER CRASH SEGMENTS

23 NON-MOTORIZED CRASHES In Clark County, the bicycle and pedestrian crashes occurred more frequently in the winter and the spring time during FIGURE 13: AVERAGE BICYCLE AND PEDESTRIAN CRASHES PER MONTH December November October September August July June May April March February January Bicycle Pedestrian The number of non-motorized crashes peaks during the PM peak periods. The pattern is similar to the vehicular crashes, except the morning peak is not as high. FIGURE 14: TOTAL NUMBER OF BICYCLE AND PEDESTRIAN CRASHES BY TIME OF DAY :00 PM 8:00 PM 6:00 PM 4:00 PM 2:00 PM 12:00 PM 10:00 AM 8:00 AM 6:00 AM 4:00 AM 2:00 AM 12:00 AM Bicycle Pedestrian Most of the non-motorized serious injury and fatal crashes took place near the strip and the downtown area ( 23

24 Figure 15). 24

25 FIGURE 15: NON-MOTORIZED FATAL AND SERIOUS INJURY HEAT MAP

26 MAP21 SAFETY PERFORMANCE MEASURE BASELINE This section summarized the required safety performance measures for The Moving Ahead for Progress in the 21st Century Act (MAP-21) in the region. Please refer to NDOT s MAP-21 Safety Performance Measure Report for the NDOT official numbers TABLE 9: AVERAGE NUMBER OF FATALITIES PER YEAR UZA Average Fatalities Urban 156 Rural 17 Total 173 TABLE 10: AVERAGE NUMBER OF FATALITIES PER MILLION VMT PER YEAR UZA Average Fatalities per Million VMT per Year Urban 1 Rural 1 All 1 TABLE 11: AVERAGE NUMBER OF SERIOUS INJURIES PER YEAR UZA Average Serious Injuries Urban 823 Rural 44 sum 867 TABLE 12: AVERAGE NUMBER OF SERIOUS INJURIES PER MILLION VMT PER YEAR UZA Average Serious Injuries per Million VMT per Year Urban 5 Rural 3 All 4 TABLE 13: AVERAGE OF NON-MOTORIZED SERIOUS INJURIES AND FATALITIES PER YEAR UZA Average Non-Motorized Serious Injuries and Fatalities Urban 478 Rural 7 All