What technique are these parking sensors using?

radar
echo sounding
infrared ranging
electromagnetic induction
Typical parking sensors are ul­tra­son­ic, often a clicking sound may be heard close by. There are also less popular elec­tro­mag­net­ic sensors, that do not require any holes in the bumper, but detect metal objects only.

Answers distribution

radar
echo sounding
infrared ranging
electromagnetic induction
answers
flagDenmark
6%
75%
12%
0%
16
flagthe Netherlands
5%
58%
17%
17%
39
flagItaly
4%
57%
14%
23%
21
flagRepublic of Ireland
16%
55%
22%
5%
36
flagGermany
10%
54%
19%
13%
201
flagPoland
13%
52%
22%
10%
12764
flagBelgium
21%
52%
5%
15%
19
flagLithuania
11%
52%
23%
11%
17
flagCanada
12%
51%
33%
3%
33
flagNorway
8%
48%
31%
8%
35
flagIndia
12%
47%
26%
11%
257
flagFrance
26%
47%
11%
11%
34
flagAustralia
10%
47%
21%
21%
19
flagthe United Kingdom
15%
46%
25%
12%
310
flagthe United States
19%
45%
23%
9%
440
flagSweden
31%
45%
9%
13%
22
flagUnknown
17%
43%
25%
13%
108
flagthe Philippines
15%
40%
20%
25%
20
flagPakistan
16%
38%
5%
38%
18
flagthe United Arab Emirates
11%
17%
47%
17%
17

Gender

men50%
women44%
radar
13%
9%
echo sounding
50%
44%
infrared ranging
26%
28%
electromagnetic induction
9%
17%

Language versions

question
answers
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What technique are these parking sensors using?
1101
43%

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