Calibration of headlight adjustment test system

There are many different requirements for SEPS. Please use our contact form so that we can clarify all your questions together. Alternatively, you can use the following detailed description as a first point of reference.

Firstly, it is important that the SEP has a valid type approval with the approval number on the type plate so that the calibration can be completed successfully.

In addition to calibrating the light adjustment device, it is also necessary to check both mounting surfaces.

Unfortunately, the detailed requirements for SEPS are currently quite complicated due to various transitional periods and depend on the commissioning date.

In general, the longitudinal and transverse inclination as well as the evenness of the two surfaces are checked.

In addition, the SEP is checked for functionality and accuracy. A positive calibration certificate can only be issued if all aspects are assessed positively.

Specific requirements:

Firstly, there are two different requirements for the number of measuring points to be recorded when measuring the vehicle footprint, depending on the date of commissioning of the SEPS:
 

For recommissioning and new commissioning, a measuring point must be recorded every 25 cm on both lanes from 1 January 2021.

In the case of unchanged existing locations, it is sufficient to use a measuring distance of 1 metre until 31.12.2034.

The longitudinal and transverse inclination of the SEP and vehicle parking area may not exceed 1.5% and must be aligned in the same direction.
 

The evenness of the vehicle footprint must fulfil the requirements of DIN 18202:2005 for "ready-to-use floors with increased requirements" (see DIN 18202:2005 Table 3 and Fig. 5, line 4). In simplified terms, this means
 

that with a 25 cm measuring grid, the evenness of the driving lane must not deviate by more than 3 mm within each metre (applied at each measuring point)

with a 1 m measuring grid, the evenness of the lane must not deviate by more than 5 mm within every two metres (applied at each measuring point).

The SEP installation area must be at least 2.50 m wide.
 

The flatness deviation of the SEP installation surface must not exceed ± 0.1 % (corresponds to ± 1 mm/m). This means that the inclination of the carriage of the headlight alignment tester must not change by more than ± 0.1 % over the entire travel distance.
 

If the SEP is able to compensate for the unevenness of the SEP installation surface during the HU (when travelling from one lane to another), this requirement can be disregarded.

The requirements for headlamp alignment testers have remained largely unchanged. The SEP must have a type approval and have an accuracy of 0.2 %.

Sources:

[1] Verkehrsblatt 23-2018 No. 174, "Guideline for checking the adjustment of motor vehicle headlights during the main inspection in accordance with Section 29 of the German Road Traffic Licensing Regulations (StVZO) (HU headlight inspection guideline)", November 2018

[2] DIN 18202:2005, "Tolerances in building construction - Structures", April 2013

Headlamp alignment systems, consisting of a headlamp alignment unit and mounting surfaces, must be checked before initial commissioning and then regularly (at least every 24 months) (in accordance with Traffic Bulletin 23-2018 No. 174).

Recalibration is necessary after every intervention in the measurement recording.

Headlamp alignment systems, consisting of a headlamp alignment unit and mounting surfaces, must be checked before initial commissioning and then regularly (at least every 24 months) (in accordance with Traffic Bulletin 23-2018 No. 174).

Recalibration is necessary after every intervention in the measurement recording.

In accordance with the applicable headlamp test guidelines, the requirements for the evenness of the SEP installation surface can be disregarded if the unevenness can be compensated for via settings on the SEP (levelling function).

For this purpose, the SEP must be able to be levelled by the test engineer during the HU in order to compensate for the unevenness of the SEP installation surface in front of the headlights of the vehicle to be tested. In principle, this is possible with both analogue and digital light adjustment devices.

If the evenness requirement for the SEP installation surface is not met, a solution may be to rework the floor, upgrade your device or purchase a levelling device. Please do not hesitate to contact us.

All points of the routine test are checked as part of our calibration procedure and documented in the calibration certificate.

An additional routine test is therefore not necessary if the calibration is carried out by TÜV NORD Mobilität.

All SEPS used as part of the HU must have a valid calibration certificate at the time of the test.

SEPS that are not calibrated are therefore no longer permitted for the HU.

You can find our prices in our price list and in our order form.