Emergency Transportation Operations

Appendix C. Sample Performance Measure Reports Produced by Motorist Assistance Program in Houston, TX

M.A.P. Operational Summary

July 2000–September 2000

The following is an operational summary prepared by the Texas Transportation Institute for the Houston Motorist Assistance Program from July 2000 through September 2000. Numbers in parentheses include abandoned vehicles.

empty cell
Quarter
(July to September 00)
Cumulative
(October 89 to present)
Number of Incidents 6,462 (9,045) 259,321 (333,038)
Average Monthly Incidents (Total/Fleet) 2,154 (3,015) empty cell
Average Daily Incidents (Total/Fleet) 103 (144) empty cell
Persons Assisted 9,764 347,716
Number of Assistances 10,716 448,626

Major Types of Assistance Traffic Control 58.3%
empty cell Directions 9.9%
empty cell Flat Tire 8.8%
empty cell Motorist Use of Phone 4.5%
empty cell Wrecker Called 4.4%
Peak Period Responses AM Peak (7–11 am) 29.0%
empty cell PM Peak (3–7 pm) 34.0%
Major Type of Detection Moving Patrol 90.1%
empty cell Houston Transtar 5.9%
Radial Freeway Incident Location Inside I-610 27.1%
empty cell At I-610 Interchange 6.5%
empty cell 0–5 mi. Outside I-610 29.1%
empty cell 6–10 mi. Outside I-610 36.4%
Majority Incidents by Freeway I-610 Loop 31.7%
empty cell I-45 South 11.8%
empty cell US 59 South 10.0%
empty cell I-45 North 9.5%
Incident Vehicle Location Left Shoulder 8.3%
empty cell Right Shoulder 81.0%
empty cell Mainlane 10.4%
Note: Percentages have been rounded.

Houston Motorist Assistance Program

Table 1. Types of Assistances
empty cell Jul–00 Aug–00 Sep–00 Total Average % of Total Incidents % of Total Assistances
Debris Removal 14 16 24 54 18 0.6% 0.5%
Directions 323 409 329 1,061 354 11.7% 9.9%
Extinguish Fire 4 6 0 10 3 0.1% 0.1%
First Aid 0 0 1 1 0 0.0% 0.0%
Flat Tire 295 335 317 947 316 10.5% 8.8%
Fuel 118 167 136 421 140 4.7% 3.9%
Jump Start 48 51 59 183 61 2.0% 1.7%
Minor Engine Repair 126 154 101 361 127 4.2% 3.6%
Motorist Use of Phone 141 181 159 481 160 5.3% 4.5%
Push Vehicle 41 54 45 140 47 1.5% 1.3%
Traffic Control 1,916 2,376 1,958 6,250 2,083 69.1% 58.3%
Transport Motorist 62 73 62 197 66 2.2% 1.8%
Water 52 43 24 119 40 1.3% 1.1%
Wrecker Called 151 179 146 476 159 5.3% 4.4%
Other 1 8 11 20 7 0.2% 0.2%
Total 3,292 4,052 3,372 10,716 3,572 empty cell 100%

Table 2. Types of Incidents
empty cell Jul–00 Aug–00 Sep–00 Total Average % of Total Incidents
Accident 202 243 239 684 228 7.6%
Carfire 3 2 2 7 2 0.1%
Debris on Road 11 12 16 39 13 0.4%
Flat Tire 468 544 410 1,422 474 15.7%
Mechanical 380 474 428 1,282 427 14.2%
Stall 376 489 361 1,226 409 13.6%
Gone on Arrival 1 5 9 15 5 0.2%
Not Specified 274 359 235 868 289 9.6%
Other 263 347 309 919 306 10.2%
Subtotal 1,978 2,475 2,009 6,462 2,154 71%
Abandoned Vehicles 758 995 830 2,583 861 29%
Total 2,736 3,470 2,839 9,045 3,015 100%

Table 3. Vehicle Location
empty cell Jul–00 Aug–00 Sep–00 Total Average % of Total Incidents
Left Shoulder 157 208 163 528 176 8.3%
Right Shoulder 1,565 1,936 1,596 5,097 1,699 81.0%
Total Shoulder 1,722 2,144 1,759 5,625 1,875 87.0%
Mainlane 200 276 195 671 224 10.4%
Not Specified 56 55 55 166 55 2.6%
Total 1,978 2,475 2,009 6,462 2,154 100%

Table 4. Incidents by Section
empty cell Jul–00 Aug–00 Sep–00 Total Average % Incidents
US-290 empty cell empty cell empty cell empty cell empty cell empty cell
    I-610 Interchange 0 10 3 13 4 empty cell
    0–5 Outside I-610 69 79 63 211 70 empty cell
    6–10 Outside I-610 111 68 105 284 95 empty cell
    Not Specified 0 0 0 0 0 empty cell
    Total 180 157 171 508 169 8.0%
I-45 North empty cell empty cell empty cell empty cell empty cell empty cell
    0–5 Inside I-610 53 68 25 146 49 empty cell
    I-610 Interchange 15 8 11 28 9 empty cell
    0–5 Outside I-610 39 78 77 194 65 empty cell
    6–10 Outside I-610 126 89 105 233 78 empty cell
    Not Specified 0 0 0 0 0 empty cell
    Total 233 243 218 601 200 9.5%
I-45 South empty cell empty cell empty cell empty cell empty cell empty cell
    0–5 Inside I-610 99 111 49 246 82 empty cell
    I-610 Interchange 5 12 6 38 13 empty cell
    0–5 Outside I-610 42 38 43 157 52 empty cell
    6–10 Outside I-610 95 125 62 306 102 empty cell
    Not Specified 0 0 0 0 0 empty cell
    Total 215 286 160 747 249 11.8%
US-59 North empty cell empty cell empty cell empty cell empty cell empty cell
    0–5 Inside I-610 41 59 61 158 53 empty cell
    I-610 Interchange 9 18 1 57 19 empty cell
    0–5 Outside I-610 27 49 39 104 35 empty cell
    6–10 Outside I-610 65 100 69 169 56 empty cell
    Not Specified 0 0 0 0 0 empty cell
    Total 142 226 170 488 163 7.7%
US-59 South empty cell empty cell empty cell empty cell empty cell empty cell
    0–5 Inside I-610 103 84 90 277 92 empty cell
    I-610 Interchange 25 47 12 84 28 empty cell
    0–5 Outside I-610 52 97 61 210 70 empty cell
    6–10 Outside I-610 28 3 32 63 21 empty cell
    Not Specified 0 0 0 0 0 empty cell
    Total 208 231 195 634 211 10.0%
I-10 West empty cell empty cell empty cell empty cell empty cell empty cell
    0–5 Inside I-610 54 57 56 126 42 empty cell
    I-610 Interchange 22 24 23 54 18 empty cell
    0–5 Outside I-610 38 51 58 151 50 empty cell
    6–10 Outside I-610 47 82 119 234 78 empty cell
    Not Specified 0 0 0 0 0 empty cell
    Total 161 214 256 565 188 8.9%
I-10 East empty cell empty cell empty cell empty cell empty cell empty cell
    0–5 Inside I-610 45 53 36 134 45 empty cell
    I-610 Interchange 14 21 6 41 14 empty cell
    0–5 Outside I-610 30 58 51 139 46 empty cell
    6–10 Outside I-610 38 45 26 109 36 empty cell
    Not Specified 0 0 0 0 0 empty cell
    Total 127 177 119 423 141 6.7%
SH-288 empty cell empty cell empty cell empty cell empty cell empty cell
    0–5 Inside I-610 28 45 16 89 30 empty cell
    I-610 Interchange 7 8 0 15 5 empty cell
    0–5 Outside I-610 48 69 48 167 55 empty cell
    6–10 Outside I-610 7 11 9 27 9 empty cell
    Not Specified 0 0 0 0 0 empty cell
    Total 90 133 73 298 99 4.7%
SH-225 empty cell empty cell empty cell empty cell empty cell empty cell
    I-610 Interchange 6 6 7 19 6 empty cell
    0–5 Outside I-610 17 15 16 48 16 empty cell
    6–10 Outside I-610 1 0 0 1 0 empty cell
    Not Specified 0 0 0 0 0 empty cell
    Total 24 21 23 68 23 1.1%
I-610 Loop empty cell empty cell empty cell empty cell empty cell empty cell
    I-610 598 787 624 2,009 670 empty cell
    Not Specified 0 0 0 0 0 empty cell
    Total 598 787 624 2,009 670 31.7%
Unspecified Freeway empty cell empty cell empty cell empty cell empty cell empty cell
    0–5 Inside I-610 0 0 0 0 0 empty cell
    I-610 Interchange 0 0 0 0 0 empty cell
    0–5 Outside I-610 0 0 0 0 0 empty cell
    6–10 Outside I-610 0 0 0 0 0 empty cell
    Not Specified 0 0 0 0 0 empty cell
    Total 0 0 0 0 0 0.0%
Grand Total 1,978 2,475 2,009 6,341 2,114 100.0%

Table 10. Incidents by Time of Day
empty cell Jul–00 Aug–00 Sep–00 Total Average % Incidents
6 97 127 92 316 105 4.9%
7 175 212 172 559 186 8.7%
8 146 195 170 511 170 7.9%
9 151 152 142 445 148 6.9%
10 93 152 97 342 114 5.3%
11 93 97 83 273 91 4.2%
12 76 105 80 261 87 4.0%
13 63 61 41 165 55 2.6%
14 124 154 137 415 138 6.4%
15 159 206 153 518 173 8.0%
16 189 239 251 679 226 10.5%
17 172 201 180 553 184 8.6%
18 135 187 157 479 160 7.4%
19 79 104 102 285 95 4.4%
20 41 70 84 195 65 3.0%
21 24 45 34 103 34 1.6%
22 0 0 4 4 1 0.1%
Not Specified 161 168 30 359 120 5.6%
Total 1,978 2,475 2,009 6,462 2,154 100%
Twenty-nine percent of incidents occurred during the AM peak from 7 to 10 am. Thirty-four percent of incidents occurred at the PM peak from 3 to 6 pm.
Table 11. Radial Freeway Incident Location
empty cell Jul–00 Aug–00 Sep–00 Total Average % of Total Incidents
0–5 miles inside I-610 423 458 333 1,214 405 27.1%
At Loop 610 97 125 69 291 97 6.5%
0–5 miles outside I-610 345 509 448 1,302 434 29.1%
6–10 miles outside I-610 519 590 518 1,627 542 36.4%
Other unspecified 12 12 17 41 14 0.9%
Total 1,396 1,694 1,385 4,475 1,492 100.0%

 

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