You can do this with a driver-state device:
https://sumo.dlr.de/docs/Driver_State.html and setting an initial awareness
< 1
This can be done by adding the sumo options
--device.driverstate.probability 1 --device.driverstate.initialAwareness 0.5

Note, that version 1.10 also includes the EIDM model which has parameters
for reaction time and perception errors:
https://sumo.dlr.de/docs/Definition_of_Vehicles%2C_Vehicle_Types%2C_and_Routes.html#car-following_model_parameters

regards,
Jakob

Am Fr., 3. Sept. 2021 um 23:55 Uhr schrieb Mohit Garg via sumo-user <
[email protected]>:

> Hi,
>
> How to incorporate human reaction time and perception errors in the IDM
> car-following model for microscopic simulations using SUMO?
> Any help would be appreciated.
>
> Thanks.
>
> Kind regards,
> Mohit
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