Development of Human Factors Guidelines for Advanced Traveler Information Systems and Commercial Vehicle Operations: Definition and Prioritization of Research Studies
Publication Number: FHWA-RD-96-143 Date: April 1997
Development of Human Factors Guidelines for Advanced Traveler Information Systems and Commercial Vehicle Operations: Definition and Prioritization of Research Studies
TRAVTEK SYSTEM CAPABILITIES
For this section, please indicate which functions/features you think the TravTek system has by marking the "HAS" column with an "X." Base your responses on what you learned from the video(s).
#
HAS
Trip Planning, Navigation, and Routing
Position/location of your vehicle provided by:
1
electronic map display
2
text or icon display
3
voice
Congestion information provided by:
4
electronic map display
5
text or icon display
6
voice
Coordination of Travel:
7
with bus time tables
8
with real-time bus information
9
with airline arrivals/departures
#
HAS
Trip Planning, Navigation, and Routing
Toll Information:
10
toll prices
11
toll credit remaining (toll automatically deducted from account bar code on vehicle)
Pre-drive Route Selection:
12
that accepts driver preferences
13
that calculates route to avoid congestion
Route Guidance:
14
that corrects your route after a missed turn
15
that responds to changes in congestion by generating a new route
16
shown on an electronic map with a view of the whole route
17
that shows only current position and next turn with directional arrows
18
given by voice
Multi-destination Trip Planning Function:
(planning a route with more than one stop)
19
allows selection of scenic routes
20
coordinates hotel accommodations
21
calculates mileage, time, and cost estimates
Other features not mentioned:
22
23
24
#
HAS
Services and Attraction Information
Parking information present:
(e.g., location of parking, cost)
25
on electronic map display
26
on a text or icon display
27
by voice
Restaurant reservations:
28
made by the system
Advertising information provided by: (similar to billboard advertising, radio commercials, tourist information signs)
29
electronic map
30
text or icon display
31
voice
Computer-based yellow pages:
32
that provides a services and attractions directory
Other features not mentioned:
33
34
35
#
HAS
In-Vehicle Road Sign Information
Notification of road closures or detours provided by:
36
electronic map display
37
text or icon display
38
voice
Advisory speeds for potential hazards such as sharp turns provided by:
39
electronic map display
40
text or icon display
41
voice
Street names, highway numbers, and distances to towns/exits provided by:
42
electronic map display
43
text or icon display
44
voice
Regulation information such as speed limits and one–way streets provided by:
45
electronic map display
46
text or icon display
47
voice
Only signs relevant to driver's pre-planned route provided in vehicle:
48
electronic map display
49
text or icon display
50
voice
Other features not mentioned:
51
52
53
#
HAS
Safety and Warning Information
Hazard warning of road construction or accident occurrence provided by:
54
electronic map display
55
text or icon display
56
voice
Vehicle monitoring, such as oil level, fuel level, or engine status, provided by:
57
text or icon display
58
voice
Notification of poor road conditions due to weather, congestion, ice, and snow provided by:
59
electronic map display
60
text or icon display
61
voice
Aid request:
(e.g., 911 emergency dispatch, tow truck request)
For this section, please indicate which functions/features you think are Essential, Desirable, or Not Needed by marking the "VALUE" columns with values from the scale below. In the first column, indicate the value of each item in an unfamiliar city. In the second column, indicate the value of each item in a familiar city.
Scale:
0 = Not Needed.
1 = Desirable: The feature would be nice to have but is not essential for me to consider buying the program.
2 = Essential: I would not consider buying the program without this feature.
VALUE: 0 = Not Needed 1 = Desirable 2 = Essential
#
Unfamiliar City
Familiar City
Trip Planning, Navigation, and Routing
Position/location of your vehicle provided by:
1
electronic map display
2
text or icon display
3
voice
Congestion information provided by:
4
electronic map display
5
text or icon display
6
voice
Coordination of Travel:
7
with bus time tables
8
with real-time bus information
9
with airline arrivals/departures
VALUE: 0 = Not Needed 1 = Desirable 2 = Essential
#
Unfamiliar City
Familiar City
Trip Planning, Navigation, and Routing:
Toll Information:
10
toll prices
11
toll credit remaining (toll automatically deducted from account bar code on vehicle)
Pre-drive Route Selection:
12
that accepts driver preferences
13
that calculates route to avoid congestion
Route Guidance:
14
that corrects your route after a missed turn
15
that responds to changes in congestion by generating a new route
16
shown on an electronic map with a view of the whole route
17
that shows only current position and next turn with directional arrows
18
given by voice
Multi-destination Trip Planning Function:
(planning a route with more than one stop)
19
allows selection of scenic routes
20
coordinates hotel accommodations
21
calculates mileage, time and cost estimates
Other features not mentioned:
22
23
24
VALUE: 0 = Not Needed 1 = Desirable 2 = Essential
#
Unfamiliar City
Familiar City
Services and Attraction Information
Parking information present:
(e.g., location of parking, cost)
25
on electronic map display
26
on a text or icon display
27
by voice
Restaurant reservations:
28
made by the system
Advertising information provided by: (similar to billboard advertising, radio commercials, tourist information signs)
29
electronic map
30
text or icon display
31
voice
Computer-based yellow pages:
32
that provides a services and attractions directory
Other features not mentioned:
33
34
35
VALUE: 0 = Not Needed 1 = Desirable 2 = Essential
#
Unfamiliar City
Familiar City
In-Vehicle Road Sign Information
Notification of road closures or detours provided by:
36
electronic map display
37
text or icon display
38
voice
Advisory speeds for potential hazards such as sharp turns provided by:
39
electronic map display
40
text or icon display
41
voice
Street names, highway numbers, and distances to towns/exits provided by:
42
electronic map display
43
text or icon display
44
voice
Regulation information such as speed limits and one-way streets provided by:
45
electronic map display
46
text or icon display
47
voice
Only signs relevant to driver's pre-planned route provided in vehicle:
48
on an electronic map display
49
on a text or icon display
50
by voice
Other features not mentioned:
51
52
VALUE: 0 = Not Needed 1 = Desirable 2 = Essential
#
Unfamiliar
City
Familiar
City
Safety and warning information:
Hazard warning of road construction or accident
occurrence provided by:
53
electronic map display
54
text or icon display
55
voice
Vehicle monitoring, such as oil level, fuel level, or engine status, provided by:
56
text or icon display
57
voice
Notification of poor road conditions due to weather, congestion, ice, and snow provided by:
58
electronic map display
59
text or icon display
60
voice
Aid request (911 emergency dispatch, tow truck request):
It is important to understand how much the TravTek demonstration put you in the place of a user. To help us, please mark with an "X" to indicate how much the statements below apply to you. Marking toward the 100 indicates that a statement strongly applies. Marking toward the 0 indicates that it does not apply.
1. I felt the demonstration captured my attention.
2. In my opinion, other drivers will feel the demonstration captures what using the system will be like.
3. In my opinion, other drivers will feel their attention captured by the demonstration.
4. The demonstration gave me the feel of what using the system would be like.
5. I would like to see other new system demonstrations.
6. My attention wandered during the demonstration.
7. In my opinion, other drivers' attention will wander during the demonstration.
8. The demonstration gave me a realistic impression of how the system might work.
9. The demonstration will give other drivers a realistic impression of how the system might work.
This section is used to help us understand how accurate navigation advice needs to be for drivers to use it. Pick the response that's best for you.
1. Would you pay attention to navigation advice which might occasionally make your trip longer (in minutes) intentionally, but would reduce overall traffic congestion?
Yes No
2. If so, how many extra minutes of travel, for a trip that normally takes 35 minutes, would you be willing to accept?
0–1 min. 5–10 min.
1–5 min. more than 10 min.
3. How often would you tolerate such delays and still use the advice?
0–1 times in 20 trips 5–10 times in 20 trips
1–5 times in 20 trips more than 10 times in 20 trips min.
4. For a journey that normally takes 35 minutes, how many minutes would you need to save to make it worthwhile to use an unfamiliar route?
0–1 min. 5–10 min.
1–5 min. more than 10 min.
5. Imagine you can get a time estimate for a trip that accounts for traffic conditions. This trip normally takes 35 minutes. If the system was occasionally wrong, how many minutes would you accept arriving early and still use the system?
0–1 min. 5–10 min.
1–5 min. more than 10 min.
6. For the same system, how many minutes would you accept arriving late and still use the system?
0–1 min. 5–10 min.
1–5 min. more than 10 min.
7. Imagine you have a system that predicts traffic congestion but does not always warn you of traffic delays. How frequently could the system fail to predict delays and still be useful to you?
0–1 times in 20 trips 5–10 times in 20 trips
1–5 times in 20 trips more than 10 times in 20 trips min.
8. Imagine you have a system that predicts traffic congestion but you find that it occasionally predicts congestion when traffic is moving smoothly. How frequently could the system falsely report congestion and still be useful to you?
0–1 times in 20 trips 5–10 times in 20 trips
1–5 times in 20 trips more than 10 times in 20 trips min.
We are interested in your judgments of how trustworthy you believe the technology to be. In addition, we are interested in how much self–confidence you have in your ability to do things yourself.
First, think about your trust in people. We all trust some people more than others. If you think about people you know, you can probably think of some you trust very much and others you trust much less. We do not trust all people equally, and we can express how much we trust a particular person.
We also think about trusting things, such as products. For example, I trust my car to start in the morning because it has never failed to do so. I trust my spouse's car much less because of a history of trouble.
Similar to trust, we can also consider the self–confidence in our own abilities. For example, you might have a great deal of self–confidence in your ability to walk to work because you have been doing it every day for several years.
If you think about it for a moment, we could rate our degree of trust and self–confidence in many of the things we use on a scale like those shown below. So let's rate a few functions that may be available in your vehicle in the future. Marking toward the 100 would indicate that a statement strongly applies. Marking toward the 0 would indicate it does not apply.
1a. I would trust a navigation system to guide me through an unfamiliar city.
1b. I have confidence in my ability to navigate myself through an unfamiliar city.
2a. I would trust a navigation system to guide me through a familiar city (e.g., home town).
2b. I have confidence in my ability to navigate myself through a familiar city (e.g, home town).
3a. I would trust a warning system to notify me of icy roads.
3b. I have confidence in my ability to identify icy roads based on my own experience.
4a. I would trust a navigation system to guide me through an unfamiliar city to the airport on time.
4b. I have confidence in my ability to navigate myself through an unfamiliar city to the airport on time.
5a. I would trust a new automatic route guidance system to avoid highway congestion.
5b. I have confidence in my ability to avoid highway congestion based upon my own observation of traffic.
6a. I would trust an in-vehicle service directory to locate a restaurant in an unfamiliar town.
6b. I have confidence in my ability to locate a restaurant in an unfamiliar town.
7a. I would trust an in-vehicle system to notify me of changes in the speed limit.
7b. I have confidence in my ability to recognize changes in the speed limit by observing roadway signs.
The following items will give us a better idea of your opinion of TravTek. For each item, please mark with an "X" to indicate how much the statements below apply to you. Marking toward the 100 indicates that a statement strongly applies. Marking toward the 0 would indicate it does not apply.
1. TravTek would match my driving style.
2. I can see benefits of using TravTek.
3. I can explain the benefits of using TravTek to other drivers.
4. TravTek is easy to understand.
5. TravTek is easy to use.
6. The demonstration let me experience what using TravTek would be like.
7. The driver in the video benefited from using TravTek.
8. TravTek has advantages over paper maps.
9. TravTek has advantages over listening to traffic reports on the radio.
10. I am comfortable evaluating TravTek after watching the video.
11. I would be able to use TravTek successfully.
12. Using TravTek would be consistent with my daily activities.
13. Using TravTek would be consistent with the way I drive.
14. I think other drivers will see the benefits of using TravTek.
15. I think that other drivers would find TravTek easy to use.
16. I think that other drivers would find TravTek easy to understand.
17. TravTek is an improvement over currently existing information sources.
18. TravTek has advantages over guide books.
19. I think it will be easy for me to tell when other drivers are using TravTek.
20. I could use TravTek effectively.
21. Other drivers could use TravTek effectively.
22. I would use TravTek if it was available in a rental (or borrowed) vehicle.
23. I would consider buying TravTek for use in my own vehicle.
24. I think other drivers would use TravTek if it were available in a rental (or borrowed) vehicle.
25. I think other drivers would consider buying TravTek for use in their vehicles.
26. TravTek will reduce the probability of automobile accidents in unfamiliar cities.
27. TravTek will reduce the probability of automobile accidents in familiar cities.
28. TravTek will force a change in my driving habits.
29. TravTek is a technological fad.
30. TravTek will reduce the amount of time I spend in traffic jams.
31. TravTek will decrease the amount of money I spend on gas.
32. TravTek will decrease the amount of time I spend navigating in unfamiliar areas.
The following items will help us to understand the usefulness of TravTek. For each item, please mark with an "X" to indicate how much the statements below apply to you. Marking toward the 100 indicates that a statement strongly applies. Marking toward the 0 would indicate it does not apply.
1. Using TravTek would enable me to reach my destination faster.
2. Using TravTek would improve my driving performance.
3. Using TravTek would increase my productivity.
4. Using TravTek would make traveling safer.
5. Using TravTek would help me arrive on time.
6. Using TravTek would enhance my driving effectiveness.
The following items will help us to understand how easy to use drivers find TravTek to be. For each item, please mark with an "X" to indicate how much the statements below apply to you. Marking toward the 100 indicates that a statement strongly applies. Marking toward the 0 would indicate it does not apply.
1. Learning to operate TravTek would be easy for me to do on my own.
2. I would find it easy to get TravTek to do what I want it to do.
3. TravTek would be clear to interact with.
4. TravTek would be understandable.
5. I would find TravTek to be flexible to interact with.
6. It would be easy for me to become skilled at using TravTek.
Please mark with an "X" how much the statements below apply to you. Marking toward the "6" indicates that you strongly agree with the statement. Marking toward the "1" indicates that you strongly disagree with the statement.
1. The TravTek system's Guidance Display:
was easy to learn
was easy to use
was useful
2. The TravTek System's Route Map:
was easy to learn
was easy to use
was useful
3. The TravTek System's Voice Guide Feature ("Turn right on Robinson."):
was easy to learn
was easy to use
was useful
4. Of the two routing displays, Route Map and Guidance Display, which did you prefer?
5. Overall, the TravTek system:
was easy to learn
was easy to use
was useful
6. Do you think TravTek would be useful for:
At home daily driving Yes No
Out-of-town vacation driving Yes No
Out-of-town business trips Yes No
The following questions relate to views your household might have regarding TravTek.
7. How much would you be willing to pay for a TravTek system such as shown in the Orlando videotapes? Please place a mark along the line below that best represents the price you'd be willing to pay.
8. Given that TravTek's purpose is to help drivers reach their destinations safely and efficiently, how important do you feel each of the following factors are in the development of systems such as TravTek? Rank each from 1 to 4 with 1 being the most important and 4 being the least important.
