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%
70%
17%
0%
17
flagItaly
4%
59%
13%
22%
22
flagthe Netherlands
11%
57%
15%
15%
52
flagGermany
10%
55%
19%
13%
229
flagNorway
9%
55%
25%
6%
43
flagPoland
13%
52%
22%
10%
16688
flagBelgium
19%
52%
4%
19%
21
flagLithuania
11%
52%
23%
11%
17
flagRepublic of Ireland
18%
51%
23%
6%
43
flagSweden
24%
51%
13%
10%
29
flagCanada
11%
50%
33%
5%
36
flagAustralia
7%
50%
21%
21%
28
flagFrance
25%
48%
11%
11%
35
flagthe United Kingdom
14%
47%
25%
11%
372
flagIndia
12%
46%
26%
11%
275
flagUnknown
14%
44%
28%
11%
1022
flagthe United States
19%
44%
23%
10%
462
flagthe Philippines
16%
41%
20%
20%
24
flagPakistan
15%
36%
10%
36%
19
flagthe United Arab Emirates
10%
26%
42%
15%
19

Gender

men46%
women43%
radar
14%
9%
echo sounding
46%
43%
infrared ranging
28%
30%
electromagnetic induction
10%
16%

Language versions

question
answers
results
flag
What technique are these parking sensors using?
1214
43%

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