Traffic Impact Assessment Studies for the Multi Storied Residential & Commercial Development at Thrissur, Kerala
Traffic Impact Assessment Studies for the Multi storied Residential & Commercial Development at Thrissur, Kerala
Prepared by,
M/s Consortia Of Infrastructure Engineers Vijayanagar, Bangalore-40 Email: [email protected] Traffic Impact Studies Road Geometrics Road Connectivity
Parking Before Speed Const Traffic Traffic Volume V/C & LoS Flow Logistics Addition Trucks Modified (const materials) scenario Requirements for of V/C & After During Const Const operation LoS TIA Impact in V/C & Impact LoS Changed Scenario if any for Traffic data from tpt. dept Traffic reduction Projection Mathematical Modeling in V/C IRC Method for Projection &LoS Projected Traffic Traffic Mgm V/C & LoS measure Google Image Location Map Site Plan with Entry & Exit
Entry & Exit Road Geometric, Connectivity & Traffic Scenario The project site is located along Mannuthi Oorakom road . Mannuthi Oorakom Road is a 2-lanes Un-divided road which connects to Ollur on one side and Thrissur Mannamangalam Road / Madakkathara on another side. Mannuthi Oorakom Road is of RoW 12 m, which includes CW of 7 m and (2.5+2.5) m shoulder on either side of the road. Thrissur Mannamangalam Road is a 2-lanes Un-divided road which connects to Thrissur on one side and Mannamangalam on another side. Thrissur Mannamangalam Road of RoW 12 m, which includes CW of 8 m and (2.5+1.5) m shoulder on either side of the road. The project can also be accessed from several perpendicular roads in the area of Kerala such as Thrissur, Mannamangalam , Ollur, Padavarad, etc., Road Geometric Scenario ROW(m) Drainage in Road Pavement m CW (m) Street Road Surface (closed Remarks lights Lanes Condition drain) Marking Signs Shoulder L R
12 Road marking Mannuthi has to be Oorakom Road 7 Good A NA NA NA NA marked and (2 lanes- 2 Undivided) road signs has 2.5+2.5 to be installed. 12 Thrissur Road marking Mannamangalam 8 Faded has to be Road Good A NA NA NA marked and (2-lanes 2 out road signs has undivided) 2.5+1.5 to be installed.
Note: A – Available NA – Not Available Mannuthi Oorakom Road
Photos of study Roads To Ollur Date:14/08/2018
To Thrissur Mannamangalam Rd
Mannuthi Oorakom Road Thrissur Mannamangalam Road
Project site
To Thrissur Mannamangalam Rd To Mannamangalam To Thrissur Speed spectrum for the study roads (kmph)
2 Wh 3 Wh 4 Wh (C,J,V) Buses/Lorries
Road Max Min Max Min Max Min Max Min
Mannuthi Oorakom Road 48 24 26 18 50 36 32 26 (2 lanes-Undivided) Thrissur Mannamangalam Road 50 28 28 20 52 38 34 28 (2-lanes undivided)
Z Speed is directly proportional to Traffic Volume. Higher the speed, more traffic volume can move upto saturation. Z The observed speed indicates that the vehicles are well within the speed limits and hence the road safety is ensured particularly in the case of highways. Real time traffic scenario along Mannuthi Oorakom Road (2-lanes Undivided) Time 2Wh 3Wh 4Wh B/L Total V/C
7.00-8.00am 45(34) 8(16) 28(28) 6(13) 87(91) 0.06
8.00-9.00 79(59) 13(26) 45(45) 12(26) 149(57) 0.10
9:00-10:00 93(70) 22(44) 52(52) 15(33) 182(199) 0.13
10:00-11:00 86(65) 18(36) 47(47) 17(37) 168(185) 0.12
4:00-5:00pm 63(47) 15(30) 36(36) 20(44) 134(157) 0.10
5:00-6:00 75(56) 20(40) 49(49) 18(40) 162(185) 0.12
6:00-7:00 90(68) 19(38) 55(55) 11(24) 175(185) 0.12 7:00-8:00 84(63) 25(50) 42(42) 13(29) 164(184) 0.12
Note: The highest peak observed is 199 PCU’s/hr as per IRC-106:1990 during 9:00 am to 10:00 am. The traffic projections are made as per IRC considering the vehicular growth taking place from past 5 years. Vehicle Composition and Traffic flow distribution along Mannuthi Oorakom Road (2-lanes Undivided) B/L 8%
4Wh 29% 2Wh 51%
3Wh 12%
250 199 200 185 185 185 184 157 157 150
91 PCU's/hr PCU's/hr 100
50
0 7.00-8.00 am 8.00-9.00 9:00-10:00 10:00-11:00 4:00-5:00 pm 5:00-6:00 6:00-7:00 7:00-8:00 Time Variation of V/C over Study Period along Mannuthi Oorakom Road (2-lanes Undivided)
1.00
0.90
0.80
0.70
0.60
0.50 V/C
0.40
0.30 0.20 0.13 0.10 0.12 0.10 0.12 0.12 0.12 0.10 0.06
0.00 7.00-8.00 am 8.00-9.00 9:00-10:00 10:00-11:00 4:00-5:00 pm 5:00-6:00 6:00-7:00 7:00-8:00 Time Real time traffic scenario along Thrissur Mannamangalam Road (2-lanes Undivided)
Time 2Wh 3Wh 4Wh B/L Total V/C
7.00-8.00am 195(146) 25(30) 125(125) 17(37) 362(339) 0.23
8.00-9.00 266(200) 36(43) 196(196) 23(51) 521(489) 0.33
9:00-10:00 301(226) 42(50) 271(271) 31(68) 645(615) 0.41
10:00-11:00 326(245) 45(54) 241(241) 28(62) 640(601) 0.40
4:00-5:00pm 251(188) 39(47) 176(176) 35(77) 501(488) 0.33
5:00-6:00 311(233) 41(49) 211(211) 26(57) 589(551) 0.37
6:00-7:00 335(251) 48(58) 253(253) 33(73) 669(634) 0.42 7:00-8:00 289(217) 32(38) 231(231) 19(42) 571(528) 0.35
Note: The highest peak observed is 634 PCU’s/hr as per IRC-106:1990 during 6:00 am to 7:00 pm. The traffic projections are made as per IRC considering the vehicular growth taking place from past 5 years. Vehicle Composition and Traffic flow distribution along Thrissur Mannamangalam Road (2-lanes Undivided) B/L 5%
4Wh 38% 2Wh 50%
3Wh 7% 700 615 601 634 600 551 528 489 488 500 400 339 300 PCU's/hr PCU's/hr 200 100 0 7.00-8.00 am 8.00-9.00 9:00-10:00 10:00-11:00 4:00-5:00 pm 5:00-6:00 6:00-7:00 7:00-8:00 Time Variation of V/C over Study Period along Thrissur Mannamangalam Road Road (2-lanes Undivided)
1.00 0.90 0.80 0.70 0.60 0.50 V/C 0.41 0.40 0.42 0.37 0.40 0.33 0.33 0.35 0.30 0.23 0.20 0.10 0.00 7.00-8.00 am 8.00-9.00 9:00-10:00 10:00-11:00 4:00-5:00 pm 5:00-6:00 6:00-7:00 7:00-8:00 Time Real Time Traffic Scenario for Study roads
Road V C Existing V/C LOS
Mannuthi Oorakom Road (2-lanes undivided) 199 1500 0.13 A Thrissur Mannamangalam Road 634 1500 0.42 C (2-lanes undivided)
V/C LOS Performance 0.0 - 0.2 A Excellent 0.2 - 0.4 B Very Good 0.4 - 0.6 C Good 0.6 - 0.8 D Fair/Average 0.8 - 1.0 E Poor 1.0& Above F Very Poor
V= Volume in PCU’s/hr & C= Capacity in PCU’s/ hr LOS = Level of Service As per IRC:106-1990, Guidelines for PCUs in Urban Roads in Plain Areas
Source: IRC:106-1990, page no-10 As per IRC:106-1990, Guidelines for Capacity of Urban Roads in Plain Areas
Source: IRC:106-1990, page no-11 During Construction It is proposed that the construction vehicles will visit the site, 8 in numbers on an average per day. V/C during construction (lorries) = 0.13 & 0.42. The present level of service will remain “A & C” along Mannuthi Oorakom Road and Thrissur Mannamangalam Road respectively. The vehicles carrying construction materials are proposed to come to the site during off peak hours. Number of lorries planned to the site (off peak hours). Day time –8 no’s. Night time –Nil. V/C indicates that there is no significant change & hence performance level also. Vehicles carrying construction materials will be well covered to prevent any spillage. Vehicles hired for construction material will be in good condition and conforms to noise and air emission standards. Tiers etc… are washed within the site. Vehicles will operate only during non peak hours. Parking logistics Car park Apartment requirement Car park Activity No. of Units Nos as per provided KMBR No. of apartments 3BHK- 167.225 150 150 273 Sq.m No. of apartments 3BHK- 195.096 150 150 273 Sq.m No. of apartments 3BHK + Study + 150 225 273 domestic help- 232.256 Sq.m Residential No. of apartments 4BHK + Utility + Family + domestic help- 260.128 150 225 273 Sq.m Club House- 2787 sq.m 10 10 15% of visitors 113 164 Commercial 28 28 Total Car Parks 901 1294
Parking Provided = 1294 No.s Flow Chart of Traffic/ Trips Distribution
From project site 100 %
Mannuthi Oorakom Road 100 % = 431
Thrissur Mannamangalam Road Ollur 70% =302 30 % = 129
Thrissur Mannamangalam Road 75 % = 227 25% = 75 Traffic flow logistics
ZSince the activity is mixed use development , the ingress & egress of vehicles will move from & to the project between 8:00am to 11:00 am as egress & 6:00pm to 9:00 pm as ingress and vice versa.
ZTotal traffic generated from this project = 1294 PCU’s.
ZTherefore, the hourly volume in PCU’s will be 1294/3 = 431 PCU’s/hr.
Z The vehicles generated from the project site will first exit to the Mannuthi
Oorakom Road.
i.e. 100%X431 = 431 PCU’s/hr will first exit to the Mannuthi Oorakom Road. 5 Out of (431 PCU’s/hr), 30% of the Traffic will moves along Mannuthi Oorakom Road towards Ollur and 70 % of the Traffic will moves towards Thrissur Mannamangalam Road / Madakkathara. Contd.,
i.e., 0.30 x 431 = 129 PCU’s/hr moves along Mannuthi Oorakom Road towards Ollur. 0.70 x 431 = 302 PCU’s/hr moves along Mannuthi Oorakom Road towards Thrissur Mannamangalam Road / Madakkathara. Z Out of (302 PCU’s/hr), 50% of the Traffic will moves along Thrissur Mannamangalam Road towards Thrissur and 20 % of the Traffic will moves towards Mannamangalam. i.e., 0.75 x 302 = 227 PCU’s/hr moves along Thrissur Mannamangalam Road towards Thrissur. 0.25 x 302 = 75 PCU’s/hr moves along Thrissur Mannamangalam Road towards Mannamangalam.
Modified V/C and LOS after adding generated traffic to existing traffic
Modified V/C and LoS after Existing Traffic adding generated traffic Road
V C V/C LOS V C V/C LOS
Mannuthi Oorakom Road 199 1500 0.13 A 199+431=630 1500 0.42 C (2 lanes-Undivided) Thrissur Mannamangalam 634 1500 0.42 C 634+302=936 1500 0.62 D Road (2 lanes-Undivided) Pedestrian Flow Management & Safety
Z Pedestrians are considered as most Vulnerable Road Users (VRU) as the accidents are increasing on pedestrians. Hence pedestrians safety must be considered as top priority in traffic engineering.
Z As per IRC, a minimum of 1.8 m wide neatly paved, well illuminated and leveled footpath must be made available for pedestrians.
Z Presently in Mannuthi Oorakom Road & Thrissur Mannamangalam Road there is no footpath for pedestrian flow, provide a minimum of 2 m footpath.
Z The capacity of the footpath for 2 m width will be 2520 (C grade) pedestrians / hr. Recommended Pedestrian Side walk capacity and level of service (IRC 103-2012)
Design Flow in number of Person per hour Width of side walk in In Both Direction All in one direction (meter) LOS B LOS C LOS B LOS C
1.8 1350 1890 2025 2835
2.0 1800 2520 2700 3780
2.5 2250 3150 3375 4725
3.0 2700 3780 4050 5670
3.5 3150 4410 4725 6615
4.0 3600 5040 5400 7560 Projected traffic for next Three years based on individual vehicular growth as per IRC : 37-2001
Vehicle Buses53)/ 2Wh 3Wh 4Wh Type lorries Road Total
% Growth 4.72 1.1 8.21 1.7
Mannuthi Oorakom Road 107(80) 23(45) 66(66) 16(35) 211(226) (2 lanes-Undivided) )Thrissur Mannamangalam Road 385(289) 50(60) 321(321) 33(76) 790(745) (2 lanes-Undivided)
Note : Considering the neighboring development if any along with traffic growth potential based on the socio-economic growth. The equation as recommended by IRC to work out the future generated traffic. Modified V/C & LOS
Projected Traffic for next Modified V/C and LOS after Three years adding the generated traffic Road
V C V/C LOS V V/C LOS
Mannuthi Oorakom Road 226 1500 0.15 A 226+431=657 0.44 C (2 lanes-Undivided) Thrissur Mannamangalam 745 1500 0.50 C 745+302=1047 0.70 D Road (2 lanes-Undivided)
Cond…..
ZAs per BIT map, Mannuthi Oorakom Road is getting widened to 21 m from 12 m which facilitating 3 lanes CW with suitable footpath, shoulder etc.
Modified V/C and LOS by Changed Scenario adding generated traffic Road After widening
V C V/C LOS V C V/C LOS Mannuthi Oorakom 657 1500 0.44 C 657 2700 0.24 B Road Thrissur Mannamangalam 1047 1500 0.70 D 1047 1500 0.70 D Road Traffic and Pedestrian Management in front of the Project Site Consolidated V/C and level of service for changed scenarios Modified Existing by adding Changed Traffic after Projected the Scenario Existing adding the traffic after generated Traffic After Road generated three years traffic widening traffic from the project
V/C LOS V/C LOS V/C LOS V/C LOS V/C LOS
Mannuthi Oorakom 0.13 A 0.42 C 0.15 A 0.44 C 0.24 B Road
Thrissur Mannamang 0.42 C 0.62 D 0.50 C 0.70 D 0.70 D alam Road Traffic Management Measures & Interventions
ZTo establish smooth entry & exit of vehicles, bell mouth shape geometry is provided at the gates. This ensures smooth transition for merging of vehicles.
Z Amber blinker lights will be used at the gate to caution vehicles which are moving out. Sign boards will also to be installed to this effect.
Z Adequate sign & guide posts for traffic as per IRC (Indian Roads Congress) or ITE (Institute of Transportation Engineers USA) to be installed along
Mannuthi Oorakom Road & Thrissur Mannamangalam Road.
ZAll precautionary measures are ensured for the safety of construction laborers while working at the site.