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Cambridge DPW:Technology &
Snow ClearingAlice Yang, Nathalie Bloch, &
Tyler Jaeckel
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DPW: SNOWCLEARINGTECH.
DPWs Job:Clear snow and ice frompublic streets and sidewalks
Our Task: Explore the use of technology
in the snow clearing process
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DPW: SNOWCLEARINGTECH.
Receivescompletedsnow workslips from
supervisors
Enters datainto payroll
Receivesinvoices fromcontractors
Does invoicetime matchcompletedwork slip?
Yes
No
Does invoiceequipment
matchcompletedwork slip?
Speaks withsupervisor
and checksoriginal work
order to
reconcile
Requestspayment
NoSpeaks withsupervisor
andcontractor to
reconcile
Yes
Payroll Data Entry Clerk
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DPW: SNOWCLEARINGTECH.
Obtains snowwork slips
from support
staff whocalled incontractors
Enters workorder info forcontractors
into snowdatabase
Receives actual sign-in/out of DPW staffand contractors
completed work slipswith clock-in/outtimes
DPWemployee or
contractortime record?
Entersemployeetime into
snowdatabase
Employee
Contractor
Do the work sliphours and
equipmentmatch theoriginal work
order?
Appliesemployeehourly ratesand obtains
total
Appliescontractor hourly
rates andequipment ratesand obtains total
No
Yes
Updates thedatabase
with newhours and
equipment
Obtains grandtotal and reports
to superintendent
Snow DatabaseData Entry Clerk
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DPW: SNOWCLEARINGTECH.
Who/What of the Snow Clearing
Who Interests
Residents Snow cleared quickly and as often as needed
Streets and sidewalks are safe
Complaints addressed
DPW Superintendentof Streets
DPWs good reputation maintained
Verifiable measures of performance
DPW Admin andSupport Staff
Less paper work
Ease of entry of data
Minimize errors
DPW DistrictSupervisors
Workers show up on time
Quality work done in a timely manner
DPW Drivers
Ease of work Less micromanagement
Equipment in good working order
Correct hours paid
Contractors More work during the season
Paid accurately and on time
Easy scheduling and access to job orders
Efficiency
Administrative
Ease
Performance
Management
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DPW: SNOWCLEARINGTECH.
Funneling Through
Technological Ideas
Applicability
Effectiveness
Ease ofImplementation
Cost
Sensor Spray
IntegratedData System
Service Management Systems GPS
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DPW: SNOWCLEARINGTECH.
Products Explored:
Service Management Systems
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DPW: SNOWCLEARINGTECH.
Potential Savings
5 Year Average1% Total Time
Savings
5% Total Time
Savings
15% Total Time
Savings
25% Total Time
Savings
50% Total Time
Savings
Total Cost Hours/Year Hours Savings Hours Savings Hours Savings Hours Savings Hours Savings
DPW Administrative Time $ 10,796 311 3 $ 108 16 $ 540 47 $ 1,619 78 $ 2,699 155 $ 5,398
DPW Overtime $ 355,442 10,534 105 $ 3,554 527 $ 17,772 1,580 $ 53,316 2,634 $ 88,860 5,267 $ 177,721
Snow Contractors $ 495,715 4,252 43 $ 4,957 213 $ 24,786 638 $ 74,357 1,063 $ 123,929 2,126 $ 247,857
$ 861,952 15,097 151 $ 8,620 755 $ 43,098 2,264 $ 129,293 3,774 $ 215,488 7,548 $ 430,976
Administrative Savings
Data Entry (Payroll, Contractor Slips, SnowDatabase)
Employee/Contractor Management Resource Distribution
Quality and Time Tracking
Range
Estimates
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DPW: SNOWCLEARINGTECH.
Potential Savings EstimatesConservative Prediction
Hours Savings
DPW Administrative (25%) 78 $ 2,699
DPW Overtime (5%) 527 $ 17,772
Snow Contractors (5%) 213 $ 24,786
818 $ 45,257
Industry Prediction
Hours Savings
DPW Administrative Time (50%) 155 $ 5,398
DPW Overtime (25%) 2,634 $ 88,860
Snow Contractors (25%) 1,063 $ 123,929
3,852 $ 218,187
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DPW: SNOWCLEARINGTECH.
Potential CostsUpfront
Hardware (Tablet, Cell Phone)
User Training (Staff)
Yearly
Software
User Fees (Mobile Service and Product Fee)
5 Field Users 20 Field Users 50 Field Users 100 Field Users
Upfront Yearly Year 1 Upfront Yearly Year 1 Upfront Yearly Year 1 Upfront Yearly Year 1
Operasoft
High $ 3,650 $ 6,900 $ 10,550 $ 10,400 $ 18,600 $ 29,000 $ 23,900 $ 42,000 $ 65,900 $ 46,400 $ 81,000 $ 127,400
Low $ 3,650 $ 3,450 $ 7,100 $ 10,400 $ 9,300 $ 19,700 $ 23,900 $ 21,000 $ 44,900 $ 46,400 $ 40,500 $ 86,900
Verizon
High $ 1,900 $ 5,400 $ 7,300 $ 3,400 $ 21,600 $ 25,000 $ 6,400 $ 54,000 $ 60,400 $ 6,400 $ 108,000 $ 114,400
Medium $ 1,650 $ 2,700 $ 4,350 $ 2,400 $ 10,800 $ 13,200 $ 3,900 $ 27,000 $ 30,900 $ 6,400 $ 54,000 $ 60,400
Low $ 1,400 $ 750 $ 2,150 $ 1,400 $ 3,000 $ 4,400 $ 1,400 $ 7,500 $ 8,900 $ 1,400 $ 15,000 $ 16,400
Xora
High $ 1,900 $ 5,700 $ 7,600 $ 3,400 $ 22,800 $ 26,200 $ 6,400 $ 57,000 $ 63,400 $ 6,400 $ 114,000 $ 120,400
Medium $ 1,650 $ 2,850 $ 4,500 $ 2,400 $ 11,400 $ 13,800 $ 3,900 $ 28,500 $ 32,400 $ 6,400 $ 57,000 $ 63,400
Low $ 1,400 $ 900 $ 2,300 $ 1,400 $ 3,600 $ 5,000 $ 1,400 $ 9,000 $ 10,400 $ 1,400 $ 18,000 $ 19,400
Range
Estimates
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DPW: SNOWCLEARINGTECH.
Potential Cost Estimates
50 Field Users
Yearly Year 1
OperasoftHigh $ 42,000 $ 65,900
ow $ 21,000 $ 44,900
VerizonHigh $ 54,000 $ 60,400
edium $ 27,000 $ 30,900
ow $ 7,500 $ 8,900
Xora
High $ 57,000 $ 63,400
edium $ 28,500 $ 32,400
ow $ 9,000 $ 10,400
Reminder: Conservative Savings Estimate: $ 45,257 Industry Savings Estimate: $ 218,187
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DPW: SNOWCLEARINGTECH.
Recommendations
Immediate:
Begin a pilot program in at least one district
or with existing DPW trucks
Medium-Term:
Conduct data analysis using new technology
Explore uses outside snow clearing
Long-Term: Evaluate uses within an integrated date
system