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
5%
68%
21%
0%
19
flagSwitzerland
19%
65%
15%
0%
26
flagItaly
4%
59%
13%
22%
22
flagthe Netherlands
11%
56%
15%
16%
53
flagGermany
10%
55%
19%
13%
233
flagNorway
9%
55%
25%
6%
43
flagBelgium
18%
54%
4%
18%
22
flagPoland
13%
52%
22%
10%
17307
flagRepublic of Ireland
18%
51%
23%
6%
43
flagSweden
23%
50%
16%
10%
30
flagAustralia
7%
50%
21%
21%
28
flagCanada
10%
48%
32%
8%
37
flagFrance
25%
48%
11%
11%
35
flagthe United Kingdom
14%
47%
25%
12%
390
flagUnknown
14%
45%
28%
11%
1056
flagIndia
12%
45%
28%
10%
306
flagthe United States
19%
44%
23%
10%
478
flagthe Philippines
16%
40%
24%
20%
25
flagPakistan
15%
35%
15%
35%
20
flagthe United Arab Emirates
10%
25%
45%
15%
20

Gender

men46%
women42%
radar
14%
9%
echo sounding
46%
42%
infrared ranging
28%
30%
electromagnetic induction
10%
16%

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question
answers
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What technique are these parking sensors using?
1290
42%

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