20
How accurate is the speed measurement?
ROAD ANGEL Plus calculates your vehicle speed from GPS data. The value is
updated every second and, at a constant speed, is highly accurate. If you are
accelerating or decelerating, the displayed value will lag behind the actual speed by a
small margin.
You may find a difference between the reading on your vehicle's speedometer and
ROAD ANGEL Plus. This is because all vehicles are manufactured with a tolerance
on the speedometer to allow for tread depth, tyre size and pressure changes.
Generally, your speedometer overestimates your speed.
How much warning does ROAD ANGEL Plus provide?
ROAD ANGEL Plus has three proximity options for fixed cameras: 250m, 500m or
1000m (see page 27). There is an additional setting called SDS or Speed Distance
Sensitivity. If you activate this setting, the proximity warning distance is doubled if
your speed is over 50mph.
My ROAD ANGEL Plus does not display my speed, it just
displays the satellites symbol.
See ‘My car has a UV/heated windscreen’ on page 15.
Why do I get a warning for a camera that is not there?
Has the unit been updated recently? The camera may have been removed from the
database.
ROAD ANGEL Plus may be warning you about a camera on a parallel road very
close to the road you are travelling on. If this is the case, the proximity bars may
switch off before they go all the way to maximum. This problem is more likely to
occur if your ROAD ANGEL Plus is set to a long alert distance setting in the Alerts
menu (see page 26).
I am not getting a warning on all fixed cameras
Has the unit been updated recently? Carry out an update to add all the new
locations. ROAD ANGEL Plus is directional: it ignores cameras that are enforcing the
speed limit in the opposite direction.
Summary of Contents for Road Angel Plus
Page 42: ......