Compar ing Waze and T MC Data Aug ust 25, 2020 Chie f, T MC Ope ra tio ns, Jason Dic e mbr e MDOT SHA Offic e o f T ra nspo rta tio n Mo b ility & Ope ra tio ns (OT MO) Dire c to r o f I nfo rma tio n Re se a rc h, AE M Co rpo ra tio n Be njamin Pe c he ux
Curre nt T MC Struc ture Re sponse T ime
By the Numb e rs • Numbe r of E ve nts pe r Month, Da y, Hour • ~ 114,000 E ve nts in 2019 (SHA o nly) • 28,160 la ne b lo c king inc ide nts • 32,427 disa b le d mo to rists • 41,161 wo rk zo ne s • Re sponse T ime ~ 10 min • T ime fo r a CHART Unit to a rrive o n sc e ne • L a ne Cle a ra nc e T ime ~ 32 min • T ime to o pe n a ll tra ve l la ne s • Inc ide nt Cle a ra nc e T ime ~ • T ime fo r a ll re so urc e s to c le a r the sc e ne • T his g e ne ra lly c o rre spo nds to a ll o the r a g e nc y a nd SHA re so urc e s b e ing c le a r, b ut no t a lwa ys 2
Wha t is the “Wa ze ” F a c to r? How many e ve nts doe s Waze add 114,000 e ve nts + W = T o ta l E ve nts How many Waze e ve nts duplic ate T MC? “E xte rna l E ve nt” o ve rlo a d is a ma jo r c o nc e rn 3
Ana lysis T ime line F e b 2020 – Be g a n a rc hiving Wa ze da ta Ma r 2020 – Sna pping Sta te ’s L RS with Wa ze la t/ long Pre limina ry sta tistic s o n • MDOT fre q ue nc y o f Wa ze e ve nts CHART Jun 2020 – Inte rme dia ry F inding s Cha ng e in Wa ze a le rts re fle c ts • c ha ng e in tra ve l within the Sta te WAZE T he re a re Wa ze e ve nts tha t • pre c e de T MC e ve nts. 4
F re q ue nc y a nd T ype o f Wa ze E ve nts • 104K Wa ze da ta pulls =8.3M “e ve nt sta te s” =1.9M Wa ze e ve nts. F o c us o n Wa ze c ra she s • 12,765 ma jo r c ra she s. Individual Cr ash E ve nts fr o m Waze 17,230 mino r c ra she s. 01.27.2020 – 06.19.2020 23,563 unc la ssifie d. Ma jo r Cra sh Mino r Cra sh Unc la ssifie d Cra sh 5
Wa ze Da ta Re fle c ts De ma nd Cha ng e 14 Ac tivity r e str ic tions fr om Mar 15 onwar ds r e duc e d: 12 ts (thousands) Re g io na l tra ve l • 10 Re g io na l c ra sh fre q ue nc ie s • T he numb e r o f Wa ze • 8 re po rts (limite d c o ng e stio n Waze Unique Ale r re duc e s ne e d fo r Wa ze ) 6 T he numb e r o f “a c c ide nts” • a nd ha za rds. 4 Compar ative analyse s will 2 r e fle c t dampe ne d Waze value . 0 J19 J26 F2 F9 F16 F23 M1 M8 M15 M22 A5 A12 A19 A25 M3 M10 M17 M24 Cale ndar We e k (Januar y 19 – Mar 24) 6
Wa ze e ve nts ma tc hing to T MC E ve nts • T wo le ve ls o f ma tc hing e xplo re d: Ma tc hing ma de b y +/ - 30 minute s, +/ - 0.5 mile s, a nd by Waze type . Ma tc hing ma de b y +/ - 30 minute s, +/ - 0.5 mile s, o n all Waze type s. • F o c us spe c ific a lly o n T MC “Co llisio n” type ma tc hing with Wa ze “Ac c ide nt” da ta . 2,951 T MC re po rte d c o llisio ns a nd 42,425 Wa ze re po rts o f a c c ide nts = ma ny ma tc he s. Wa ze e ve nts o n a rte ria ls in so uthe rn Ma ryla nd a nd e lse whe re with T MC e ve nts 7
Pre limina ry Ana lyse s: F re e wa ys Waze "Accident" Report Match Any Waze Report Match with TMC Waze TMC Collision with TMC Collison Report Collison Report Roadway Major/Minor Report Count Time Difference Time Difference Report Count Count Count (minutes) (minutes) I-95 102 778 83 -8.4 345 -7.0 I-695 94 461 92 -2.1 161 -4.4 I-495 86 260 70 -10.1 158 -10.5 I-270 41 198 33 -9.9 76 -7.6 I-70 28 148 24 -9.2 43 -7.7 US 50 20 180 13 -4.7 47 -4.6 I-83 19 75 11 0.3 21 -1.4 I-97 10 72 9 -13.6 17 -8.4 I-795 5 29 3 -0.3 5 -0.5 MD 100 4 25 2 1.1 4 -0.8 I-81 3 19 3 -5.2 10 -9.9 MD 32 2 7 1 -4.5 2 -4.0 MD 200 1 14 1 -25.0 2 -4.3 * No te : T he se a re pre limina ry re sults; the re ma y b e impe rfe c t ma tc hing due to L RS impre c isio ns 8
De e pe r Dive : US 50 – All Wa ze E ve nts 5 • US-50 – I mpre c ise ma tc hing o n Wa ze ro a d-a le rt type s: Count of Unique Waze UiD 4 • Co uld impro ve de te c tio n time , o n a ve ra g e , b y 5 minute s 3 • Co uld impro ve de te c tio n time b y a s muc h a s 20 minute s. • T he re a re Wa ze e ve nts tha t tra il 2 T MC e ve nts. • T he re a re T MC c o llisio n e ve nts 1 no t in Wa ze e ve nts. • T he re a re Wa ze e ve nts no t in the T MC c o llisio n da ta . 0 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 Waze Re por ts pr e c e de or T r ail T MC Collision Re por t (minute s) 9
De e pe r Dive : US 50 – “Ac c ide nt E ve nts” • Pre c ise ma tc hing o n US-50 3 b e twe e n T MC c o llisio n a nd Count of Unique Waze UiD Wa ze a c c ide nt type ma y: • I mpro ve de te c tio n time b y 5 2 minute s o n a ve ra g e , • I mpro ve de te c tio n time b y a s muc h a s 20-minute s. 1 0 -20 -16 -12 -8 -4 0 4 8 12 16 Waze “Ac c ide nts” pr e c e de or T r ail T MC Collision Re por t (minute s) 10
Curre nt Cro wdso urc e Da ta Use s Re sponse T ime AT MS Ca lc ula te s e stima te d que ue ba se d on ve hic le probe da ta Wa ze T ra ffic Vie w T o o l a llo ws c usto m ro ute s to mo nito r o f re a l-time pe rfo rma nc e fo r e a rly de te c tio n o f inc ide nts a nd ro utine tro ub le spo ts.
Prima ry Cro wdso urc e d Da ta Use Re sponse T ime he prima ry g o a l is to improve inc ide nt de te c tion T Se c o nda ry g o a l is to impr ove ve r ific ation
Wa ze I mpro ve s I nc ide nt T ime line 13
Use Cro wdso urc ing Da ta to … Re sponse T ime Save L ive s… 7/ 29/ 20 – 11pm fa ta l c ra sh a lo ng I -95 So uth a t MD 100. Wa s o rig ina lly a disa b le d • ve hic le in la ne 4 – no CHART T MC a wa re 8/ 13/ 20 – 5a m fa ta l c ra sh a lo ng I -695 E a st prio r to MD 7. Wa s o rig ina lly a disa b le d • ve hic le in la ne 2. CHART T MC no t a wa re . Sta te Po lic e ha d a re po rt fo r a disa b le d ve hic le a lo ng We st Bo und I -695 o ne e xit a wa y. T he “what if” is wor th the inve stme nt Wa ze da ta c a n also he lp de te c t inc ide nts fa r mo re q uic kly o n se c o nda ry ro a ds • no t c urre ntly mo nito re d b y the CHART T MC. Mo re o ve r, the a na lysis o f a rc hive d Wa ze da ta will he lp CHART ide ntify prio rity • g a ps in mo nito ring tha t c a n b e o ve rc o me thro ug h I T S inve stme nts. Ana lysis o f a rc hive d Wa ze da ta will he lp CHART a lig n/ e xpa nd sa fe ty se rvic e • pa tro l ro ute s.
Que stions? Jason Dicembre Division Chief - TMC Operations Maryland Department of Transportation State Highway Administration Office of Transportation Mobility & Operations (OTMO) 410 -582-5650 jdicembre1@sha.state.md.us 15
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